21201102112010 has 16 divisors (see below), whose sum is σ = 38170881520200. Its totient is φ = 8478463574016.

The previous prime is 21201102111997. The next prime is 21201102112087. The reversal of 21201102112010 is 1021120110212.

It can be written as a sum of positive squares in 4 ways, for example, as 21104845188001 + 96256924009 = 4594001^2 + 310253^2 .

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, 247113815 + ... + 247199594.

Almost surely, 2^{21201102112010} is an apocalyptic number.

21201102112010 is a deficient number, since it is larger than the sum of its proper divisors (16969779408190).

21201102112010 is a wasteful number, since it uses less digits than its factorization.

21201102112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494317705.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21201102112010 its reverse (1021120110212), we get a palindrome (22222222222222).

The spelling of 21201102112010 in words is "twenty-one trillion, two hundred one billion, one hundred two million, one hundred twelve thousand, ten".