2131121032 has 16 divisors (see below), whose sum is σ = 3996927900. Its totient is φ = 1065273600.

The previous prime is 2131121023. The next prime is 2131121053. The reversal of 2131121032 is 2301211312.

It can be written as a sum of positive squares in 2 ways, for example, as 2042497636 + 88623396 = 45194^2 + 9414^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2131120997 and 2131121015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2469 + ... + 65332.

Almost surely, 2^2131121032 is an apocalyptic number.

It is an amenable number.

2131121032 is a deficient number, since it is larger than the sum of its proper divisors (1865806868).

2131121032 is a wasteful number, since it uses less digits than its factorization.

2131121032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71736 (or 71732 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2131121032 is about 46164.0664586646. The cubic root of 2131121032 is about 1286.8740352621.

Adding to 2131121032 its reverse (2301211312), we get a palindrome (4432332344).

The spelling of 2131121032 in words is "two billion, one hundred thirty-one million, one hundred twenty-one thousand, thirty-two".