22121002212111 has 24 divisors (see below), whose sum is σ = 34857493916544. Its totient is φ = 13406607585360.

The previous prime is 22121002212053. The next prime is 22121002212149. The reversal of 22121002212111 is 11121220012122.

22121002212111 is a `hidden beast` number, since 2 + 21 + 210 + 0 + 221 + 211 + 1 = 666.

It is not a de Polignac number, because 22121002212111 - 2³⁰ = 22119928470287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121002212191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32338150 + ... + 33015116.

It is an arithmetic number, because the mean of its divisors is an integer number (1452395579856).

Almost surely, 2^{22121002212111} is an apocalyptic number.

22121002212111 is a deficient number, since it is larger than the sum of its proper divisors (12736491704433).

22121002212111 is a wasteful number, since it uses less digits than its factorization.

22121002212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007051 (or 1007048 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22121002212111 its reverse (11121220012122), we get a palindrome (33242222224233).

The spelling of 22121002212111 in words is "twenty-two trillion, one hundred twenty-one billion, two million, two hundred twelve thousand, one hundred eleven".