2123331212 has 12 divisors (see below), whose sum is σ = 3934407960. Its totient is φ = 999214656.

The previous prime is 2123331211. The next prime is 2123331233. The reversal of 2123331212 is 2121333212.

It is not an unprimeable number, because it can be changed into a prime (2123331211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15612662 + ... + 15612797.

It is an arithmetic number, because the mean of its divisors is an integer number (327867330).

Almost surely, 2^2123331212 is an apocalyptic number.

It is an amenable number.

2123331212 is a deficient number, since it is larger than the sum of its proper divisors (1811076748).

2123331212 is a wasteful number, since it uses less digits than its factorization.

2123331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31225480 (or 31225478 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 2123331212 is about 46079.6181841820. The cubic root of 2123331212 is about 1285.3041641455.

Adding to 2123331212 its reverse (2121333212), we get a palindrome (4244664424).

The spelling of 2123331212 in words is "two billion, one hundred twenty-three million, three hundred thirty-one thousand, two hundred twelve".