202020202201121 has 32 divisors (see below), whose sum is σ = 208688771412000. Its totient is φ = 195486877440000.

The previous prime is 202020202201067. The next prime is 202020202201199. The reversal of 202020202201121 is 121102202020202.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 66905267230096 + 135114934971025 = 8179564^2 + 11623895^2 .

It is a cyclic number.

It is not a de Polignac number, because 202020202201121 - 2⁶ = 202020202201057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202020202201121.

It is not an unprimeable number, because it can be changed into a prime (202020202203121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2596588421 + ... + 2596666221.

It is an arithmetic number, because the mean of its divisors is an integer number (6521524106625).

Almost surely, 2^{202020202201121} is an apocalyptic number.

It is an amenable number.

202020202201121 is a deficient number, since it is larger than the sum of its proper divisors (6668569210879).

202020202201121 is a wasteful number, since it uses less digits than its factorization.

202020202201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80741.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202020202201121 its reverse (121102202020202), we get a palindrome (323122404221323).

The spelling of 202020202201121 in words is "two hundred two trillion, twenty billion, two hundred two million, two hundred one thousand, one hundred twenty-one".