21204032302 has 32 divisors (see below), whose sum is σ = 33644160000. Its totient is φ = 10008897600.

The previous prime is 21204032257. The next prime is 21204032309. The reversal of 21204032302 is 20323040212.

It is a super-2 number, since 2×21204032302² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21204032302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21204032309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457074 + ... + 501322.

It is an arithmetic number, because the mean of its divisors is an integer number (1051380000).

Almost surely, 2^21204032302 is an apocalyptic number.

21204032302 is a deficient number, since it is larger than the sum of its proper divisors (12440127698).

21204032302 is a wasteful number, since it uses less digits than its factorization.

21204032302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44472.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21204032302 its reverse (20323040212), we get a palindrome (41527072514).

The spelling of 21204032302 in words is "twenty-one billion, two hundred four million, thirty-two thousand, three hundred two".