21202112100110 has 32 divisors (see below), whose sum is σ = 38793650136192. Its totient is φ = 8341272260640.

The previous prime is 21202112100109. The next prime is 21202112100133. The reversal of 21202112100110 is 1100121120212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24176456 + ... + 25038075.

It is an arithmetic number, because the mean of its divisors is an integer number (1212301566756).

Almost surely, 2^{21202112100110} is an apocalyptic number.

21202112100110 is a deficient number, since it is larger than the sum of its proper divisors (17591538036082).

21202112100110 is a wasteful number, since it uses less digits than its factorization.

21202112100110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49215248.

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

Adding to 21202112100110 its reverse (1100121120212), we get a palindrome (22302233220322).

The spelling of 21202112100110 in words is "twenty-one trillion, two hundred two billion, one hundred twelve million, one hundred thousand, one hundred ten".