21202131032 has 16 divisors (see below), whose sum is σ = 41482430640. Its totient is φ = 10140149536.

The previous prime is 21202131031. The next prime is 21202131047. The reversal of 21202131032 is 23013120212.

It is a self number, because there is not a number n which added to its sum of digits gives 21202131032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202131031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57614303 + ... + 57614670.

It is an arithmetic number, because the mean of its divisors is an integer number (2592651915).

Almost surely, 2^21202131032 is an apocalyptic number.

It is an amenable number.

21202131032 is a deficient number, since it is larger than the sum of its proper divisors (20280299608).

21202131032 is a wasteful number, since it uses less digits than its factorization.

21202131032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115229002 (or 115228998 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21202131032 its reverse (23013120212), we get a palindrome (44215251244).

The spelling of 21202131032 in words is "twenty-one billion, two hundred two million, one hundred thirty-one thousand, thirty-two".