22100122201221 has 48 divisors (see below), whose sum is σ = 33164032150080. Its totient is φ = 14169658440960.

The previous prime is 22100122201207. The next prime is 22100122201231. The reversal of 22100122201221 is 12210222100122.

It is a happy number.

22100122201221 is a `hidden beast` number, since 2 + 210 + 0 + 12 + 220 + 1 + 221 = 666.

It is not a de Polignac number, because 22100122201221 - 2¹⁰ = 22100122200197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22100122201194 and 22100122201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100122201231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94810906 + ... + 95043716.

It is an arithmetic number, because the mean of its divisors is an integer number (690917336460).

Almost surely, 2^{22100122201221} is an apocalyptic number.

It is an amenable number.

22100122201221 is a deficient number, since it is larger than the sum of its proper divisors (11063909948859).

22100122201221 is a wasteful number, since it uses less digits than its factorization.

22100122201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236146 (or 236143 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22100122201221 its reverse (12210222100122), we get a palindrome (34310344301343).

The spelling of 22100122201221 in words is "twenty-two trillion, one hundred billion, one hundred twenty-two million, two hundred one thousand, two hundred twenty-one".