2123212124 has 24 divisors (see below), whose sum is σ = 4098956400. Its totient is φ = 954250880.

The previous prime is 2123212123. The next prime is 2123212207. The reversal of 2123212124 is 4212123212.

It is a junction number, because it is equal to n+sod(n) for n = 2123212096 and 2123212105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123212121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267179 + ... + 275010.

It is an arithmetic number, because the mean of its divisors is an integer number (170789850).

Almost surely, 2^2123212124 is an apocalyptic number.

It is an amenable number.

2123212124 is a deficient number, since it is larger than the sum of its proper divisors (1975744276).

2123212124 is a wasteful number, since it uses less digits than its factorization.

2123212124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542293 (or 542291 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 2123212124 is about 46078.3259678561. The cubic root of 2123212124 is about 1285.2801347394.

Adding to 2123212124 its reverse (4212123212), we get a palindrome (6335335336).

The spelling of 2123212124 in words is "two billion, one hundred twenty-three million, two hundred twelve thousand, one hundred twenty-four".