21020332002312 has 64 divisors (see below), whose sum is σ = 53510042476800. Its totient is φ = 6879862379520.

The previous prime is 21020332002289. The next prime is 21020332002353. The reversal of 21020332002312 is 21320023302012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30282993 + ... + 30969344.

It is an arithmetic number, because the mean of its divisors is an integer number (836094413700).

Almost surely, 2^{21020332002312} is an apocalyptic number.

It is an amenable number.

21020332002312 is an abundant number, since it is smaller than the sum of its proper divisors (32489710474488).

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

21020332002312 is a wasteful number, since it uses less digits than its factorization.

21020332002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61252606 (or 61252602 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21020332002312 its reverse (21320023302012), we get a palindrome (42340355304324).

The spelling of 21020332002312 in words is "twenty-one trillion, twenty billion, three hundred thirty-two million, two thousand, three hundred twelve".