21101000122210 has 16 divisors (see below), whose sum is σ = 37985989398336. Its totient is φ = 8439469120368.

The previous prime is 21101000122199. The next prime is 21101000122211. The reversal of 21101000122210 is 1222100010112.

It is not an unprimeable number, because it can be changed into a prime (21101000122211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116270862 + ... + 116452201.

It is an arithmetic number, because the mean of its divisors is an integer number (2374124337396).

Almost surely, 2^{21101000122210} is an apocalyptic number.

21101000122210 is a deficient number, since it is larger than the sum of its proper divisors (16884989276126).

21101000122210 is a wasteful number, since it uses less digits than its factorization.

21101000122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232732137.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21101000122210 its reverse (1222100010112), we get a palindrome (22323100132322).

The spelling of 21101000122210 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-two thousand, two hundred ten".