21011102202110 has 64 divisors (see below), whose sum is σ = 40631508403200. Its totient is φ = 7807622562432.

The previous prime is 21011102202109. The next prime is 21011102202131. The reversal of 21011102202110 is 1120220111012.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11738630 + ... + 13409609.

It is an arithmetic number, because the mean of its divisors is an integer number (634867318800).

Almost surely, 2^{21011102202110} is an apocalyptic number.

21011102202110 is a deficient number, since it is larger than the sum of its proper divisors (19620406201090).

21011102202110 is a wasteful number, since it uses less digits than its factorization.

21011102202110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25148385.

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

Adding to 21011102202110 its reverse (1120220111012), we get a palindrome (22131322313122).

The spelling of 21011102202110 in words is "twenty-one trillion, eleven billion, one hundred two million, two hundred two thousand, one hundred ten".