What does 2 Kings 24:18 mean?

2 Kings 24:18 KJV
Zedekiah [was] twenty and one years old when he began to reign, and he reigned eleven years in Jerusalem. And his mother’s name [was] Hamutal, the daughter of Jeremiah of Libnah.

2 Kings 24:18 MKJV
Zedekiah [was] twenty-one years old when he began to reign, and he reigned eleven years in Jerusalem. And his mother’s name [was] Hamutal, the daughter of Jeremiah of Libnah.

2 Kings 24:18 NKJV
 Zedekiah [was] twenty-one years old when he became king, and he reigned eleven years in Jerusalem. His mother’s name [was] Hamutal the daughter of Jeremiah of Libnah.

2 Kings 24:18 KJV 2000
Zedekiah was twenty and one years old when he began to reign, and he reigned eleven years in Jerusalem. And his mother’s name was Hamutal, the daughter of Jeremiah of Libnah.

Interlinear KJV

Zedekiah /Tsidqiyah/ was twenty /`esriym/ and one /’echad/ years /shaneh (in pl. only),/ old /ben/ when he began to reign, /malak/ and he reigned /malak/ eleven /’echad/ /`asar/ years /shaneh (in pl. only),/ in Jerusalem. /Y@ruwshalaim/ And his mother’s /’em/ name /shem/ was Hamutal, /Chamuwtal/ the daughter /bath/ of Jeremiah /Yirm@yah/ of Libnah. /Libnah/

Patrick/Lowth/Whitby/Lowman Commentary

Zedekiah—reigned eleven years in Jerusalem, &c. In the end of which he was carried captive Jer 1:3.