22122012020121 has 48 divisors (see below), whose sum is σ = 37575850691520. Its totient is φ = 12812748998400.

The previous prime is 22122012020099. The next prime is 22122012020167. The reversal of 22122012020121 is 12102021022122.

It is a happy number.

22122012020121 is a `hidden beast` number, since 221 + 2 + 201 + 20 + 201 + 21 = 666.

It is not a de Polignac number, because 22122012020121 - 2⁶ = 22122012020057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22122012020094 and 22122012020103.

It is not an unprimeable number, because it can be changed into a prime (22122012020321) 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, 142514455 + ... + 142669596.

It is an arithmetic number, because the mean of its divisors is an integer number (782830222740).

Almost surely, 2^{22122012020121} is an apocalyptic number.

It is an amenable number.

22122012020121 is a deficient number, since it is larger than the sum of its proper divisors (15453838671399).

22122012020121 is a wasteful number, since it uses less digits than its factorization.

22122012020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285184103 (or 285184084 counting only the distinct ones).

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

Adding to 22122012020121 its reverse (12102021022122), we get a palindrome (34224033042243).

The spelling of 22122012020121 in words is "twenty-two trillion, one hundred twenty-two billion, twelve million, twenty thousand, one hundred twenty-one".