202201222100121 has 18 divisors (see below), whose sum is σ = 294988830062030. Its totient is φ = 133466153140800.

The previous prime is 202201222100039. The next prime is 202201222100131. The reversal of 202201222100121 is 121001222102202.

It is a happy number.

202201222100121 is a `hidden beast` number, since 2 + 0 + 220 + 1 + 222 + 100 + 121 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 179209091610000 + 22992130490121 = 13386900^2 + 4795011^2 .

It is not a de Polignac number, because 202201222100121 - 2⁹ = 202201222099609 is a prime.

It is a super-2 number, since 2×202201222100121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202201222100094 and 202201222100103.

It is not an unprimeable number, because it can be changed into a prime (202201222100131) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1101114076 + ... + 1101297693.

Almost surely, 2^{202201222100121} is an apocalyptic number.

It is an amenable number.

202201222100121 is a deficient number, since it is larger than the sum of its proper divisors (92787607961909).

202201222100121 is a wasteful number, since it uses less digits than its factorization.

202201222100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202411977 (or 2202411873 counting only the distinct ones).

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

Adding to 202201222100121 its reverse (121001222102202), we get a palindrome (323202444202323).

The spelling of 202201222100121 in words is "two hundred two trillion, two hundred one billion, two hundred twenty-two million, one hundred thousand, one hundred twenty-one".