21002100020332 has 6 divisors (see below), whose sum is σ = 36753675035588. Its totient is φ = 10501050010164.

The previous prime is 21002100020309. The next prime is 21002100020441. The reversal of 21002100020332 is 23302000120012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2625262502538 + ... + 2625262502545.

Almost surely, 2^{21002100020332} is an apocalyptic number.

It is an amenable number.

21002100020332 is a deficient number, since it is larger than the sum of its proper divisors (15751575015256).

21002100020332 is a wasteful number, since it uses less digits than its factorization.

21002100020332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250525005087 (or 5250525005085 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21002100020332 its reverse (23302000120012), we get a palindrome (44304100140344).

The spelling of 21002100020332 in words is "twenty-one trillion, two billion, one hundred million, twenty thousand, three hundred thirty-two".