22200120102121 has 6 divisors (see below), whose sum is σ = 24039183306030. Its totient is φ = 20492418555648.

The previous prime is 22200120102113. The next prime is 22200120102133. The reversal of 22200120102121 is 12120102100222.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2788482515625 + 19411637586496 = 1669875^2 + 4405864^2 .

It is not a de Polignac number, because 22200120102121 - 2³ = 22200120102113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22200120102095 and 22200120102104.

It is not an unprimeable number, because it can be changed into a prime (22200120102191) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65680828536 + ... + 65680828873.

It is an arithmetic number, because the mean of its divisors is an integer number (4006530551005).

Almost surely, 2^{22200120102121} is an apocalyptic number.

It is an amenable number.

22200120102121 is a deficient number, since it is larger than the sum of its proper divisors (1839063203909).

22200120102121 is a wasteful number, since it uses less digits than its factorization.

22200120102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131361657435 (or 131361657422 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22200120102121 its reverse (12120102100222), we get a palindrome (34320222202343).

The spelling of 22200120102121 in words is "twenty-two trillion, two hundred billion, one hundred twenty million, one hundred two thousand, one hundred twenty-one".