22122201020121 has 10 divisors (see below), whose sum is σ = 33046744733882. Its totient is φ = 14748134013360.

The previous prime is 22122201020071. The next prime is 22122201020201. The reversal of 22122201020121 is 12102010222122.

It is a happy number.

22122201020121 is a `hidden beast` number, since 2 + 212 + 220 + 10 + 201 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17542862096400 + 4579338923721 = 4188420^2 + 2139939^2 .

It is not a de Polignac number, because 22122201020121 - 2²⁶ = 22122133911257 is a prime.

It is a super-2 number, since 2×22122201020121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22122201020094 and 22122201020103.

It is not an unprimeable number, because it can be changed into a prime (22122201020021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 136556796340 + ... + 136556796501.

Almost surely, 2^{22122201020121} is an apocalyptic number.

It is an amenable number.

22122201020121 is a deficient number, since it is larger than the sum of its proper divisors (10924543713761).

22122201020121 is an equidigital number, since it uses as much as digits as its factorization.

22122201020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273113592853 (or 273113592844 counting only the distinct ones).

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

Adding to 22122201020121 its reverse (12102010222122), we get a palindrome (34224211242243).

The spelling of 22122201020121 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred one million, twenty thousand, one hundred twenty-one".