21121022022110 has 64 divisors (see below), whose sum is σ = 39655399703040. Its totient is φ = 8091993248640.

The previous prime is 21121022022097. The next prime is 21121022022157. The reversal of 21121022022110 is 1122022012112.

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, 16701917 + ... + 17921943.

It is an arithmetic number, because the mean of its divisors is an integer number (619615620360).

Almost surely, 2^{21121022022110} is an apocalyptic number.

21121022022110 is a deficient number, since it is larger than the sum of its proper divisors (18534377680930).

21121022022110 is a wasteful number, since it uses less digits than its factorization.

21121022022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220801.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21121022022110 its reverse (1122022012112), we get a palindrome (22243044034222).

The spelling of 21121022022110 in words is "twenty-one trillion, one hundred twenty-one billion, twenty-two million, twenty-two thousand, one hundred ten".