21201022002110 has 16 divisors (see below), whose sum is σ = 38195641076400. Its totient is φ = 8472897362496.

The previous prime is 21201022002037. The next prime is 21201022002179. The reversal of 21201022002110 is 1120022010212.

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, 938917940 + ... + 938940519.

It is an arithmetic number, because the mean of its divisors is an integer number (2387227567275).

Almost surely, 2^{21201022002110} is an apocalyptic number.

21201022002110 is a deficient number, since it is larger than the sum of its proper divisors (16994619074290).

21201022002110 is a wasteful number, since it uses less digits than its factorization.

21201022002110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877859595.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21201022002110 its reverse (1120022010212), we get a palindrome (22321044012322).

The spelling of 21201022002110 in words is "twenty-one trillion, two hundred one billion, twenty-two million, two thousand, one hundred ten".