202012202101121 has 2 divisors, whose sum is σ = 202012202101122. Its totient is φ = 202012202101120.

The previous prime is 202012202101091. The next prime is 202012202101139. The reversal of 202012202101121 is 121101202210202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158979441777025 + 43032760324096 = 12608705^2 + 6559936^2 .

It is a cyclic number.

It is not a de Polignac number, because 202012202101121 - 2³⁰ = 202011128359297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202012202101121.

It is not a weakly prime, because it can be changed into another prime (202012202101321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101006101050560 + 101006101050561.

It is an arithmetic number, because the mean of its divisors is an integer number (101006101050561).

Almost surely, 2^{202012202101121} is an apocalyptic number.

It is an amenable number.

202012202101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202012202101121 is an equidigital number, since it uses as much as digits as its factorization.

202012202101121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202012202101121 its reverse (121101202210202), we get a palindrome (323113404311323).

The spelling of 202012202101121 in words is "two hundred two trillion, twelve billion, two hundred two million, one hundred one thousand, one hundred twenty-one".