202201200021121 has 16 divisors (see below), whose sum is σ = 239021641168128. Its totient is φ = 167446479340800.

The previous prime is 202201200021101. The next prime is 202201200021251. The reversal of 202201200021121 is 121120002102202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202201200021121 - 2²¹ = 202201197923969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202201200021095 and 202201200021104.

It is not an unprimeable number, because it can be changed into a prime (202201200021101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3420037420 + ... + 3420096541.

It is an arithmetic number, because the mean of its divisors is an integer number (14938852573008).

Almost surely, 2^{202201200021121} is an apocalyptic number.

It is an amenable number.

202201200021121 is a deficient number, since it is larger than the sum of its proper divisors (36820441147007).

202201200021121 is a wasteful number, since it uses less digits than its factorization.

202201200021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840134112.

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

Adding to 202201200021121 its reverse (121120002102202), we get a palindrome (323321202123323).

The spelling of 202201200021121 in words is "two hundred two trillion, two hundred one billion, two hundred million, twenty-one thousand, one hundred twenty-one".