21031132020232 has 16 divisors (see below), whose sum is σ = 39434908550400. Its totient is φ = 10515156406800.

The previous prime is 21031132020163. The next prime is 21031132020287. The reversal of 21031132020232 is 23202023113012.

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, 50982144 + ... + 51393007.

It is an arithmetic number, because the mean of its divisors is an integer number (2464681784400).

Almost surely, 2^{21031132020232} is an apocalyptic number.

It is an amenable number.

21031132020232 is a deficient number, since it is larger than the sum of its proper divisors (18403776530168).

21031132020232 is a wasteful number, since it uses less digits than its factorization.

21031132020232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102400836 (or 102400832 counting only the distinct ones).

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

Adding to 21031132020232 its reverse (23202023113012), we get a palindrome (44233155133244).

The spelling of 21031132020232 in words is "twenty-one trillion, thirty-one billion, one hundred thirty-two million, twenty thousand, two hundred thirty-two".