21121010122022 has 64 divisors (see below), whose sum is σ = 35902524284928. Its totient is φ = 9279315936000.

The previous prime is 21121010121971. The next prime is 21121010122061. The reversal of 21121010122022 is 22022101012112.

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, 2718554 + ... + 7045037.

It is an arithmetic number, because the mean of its divisors is an integer number (560976941952).

Almost surely, 2^{21121010122022} is an apocalyptic number.

21121010122022 is a deficient number, since it is larger than the sum of its proper divisors (14781514162906).

21121010122022 is a wasteful number, since it uses less digits than its factorization.

21121010122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9763725.

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

Adding to 21121010122022 its reverse (22022101012112), we get a palindrome (43143111134134).

The spelling of 21121010122022 in words is "twenty-one trillion, one hundred twenty-one billion, ten million, one hundred twenty-two thousand, twenty-two".