21101122210210 has 16 divisors (see below), whose sum is σ = 43408022832576. Its totient is φ = 7234670472048.

The previous prime is 21101122210163. The next prime is 21101122210297. The reversal of 21101122210210 is 1201222110112.

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, 150722301432 + ... + 150722301571.

It is an arithmetic number, because the mean of its divisors is an integer number (2713001427036).

Almost surely, 2^{21101122210210} is an apocalyptic number.

21101122210210 is an abundant number, since it is smaller than the sum of its proper divisors (22306900622366).

21101122210210 is a wasteful number, since it uses less digits than its factorization.

21101122210210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301444603017.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21101122210210 its reverse (1201222110112), we get a palindrome (22302344320322).

The spelling of 21101122210210 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-two million, two hundred ten thousand, two hundred ten".