21330031221102 has 16 divisors (see below), whose sum is σ = 42660946600272. Its totient is φ = 7109863047360.

The previous prime is 21330031221077. The next prime is 21330031221139. The reversal of 21330031221102 is 20112213003312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36526093 + ... + 37105464.

It is an arithmetic number, because the mean of its divisors is an integer number (2666309162517).

Almost surely, 2^{21330031221102} is an apocalyptic number.

21330031221102 is an abundant number, since it is smaller than the sum of its proper divisors (21330915379170).

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

21330031221102 is a wasteful number, since it uses less digits than its factorization.

21330031221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73679843.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21330031221102 its reverse (20112213003312), we get a palindrome (41442244224414).

The spelling of 21330031221102 in words is "twenty-one trillion, three hundred thirty billion, thirty-one million, two hundred twenty-one thousand, one hundred two".