2121331432 has 32 divisors (see below), whose sum is σ = 4349469600. Its totient is φ = 961934400.

The previous prime is 2121331393. The next prime is 2121331447. The reversal of 2121331432 is 2341331212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8419 + ... + 65677.

It is an arithmetic number, because the mean of its divisors is an integer number (135920925).

Almost surely, 2^2121331432 is an apocalyptic number.

2121331432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121331432 is an abundant number, since it is smaller than the sum of its proper divisors (2228138168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121331432 is a wasteful number, since it uses less digits than its factorization.

2121331432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57697 (or 57693 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 2121331432 is about 46057.9138911002. The cubic root of 2121331432 is about 1284.9005322029.

Adding to 2121331432 its reverse (2341331212), we get a palindrome (4462662644).

The spelling of 2121331432 in words is "two billion, one hundred twenty-one million, three hundred thirty-one thousand, four hundred thirty-two".