202100022211121 has 2 divisors, whose sum is σ = 202100022211122. Its totient is φ = 202100022211120.

The previous prime is 202100022211079. The next prime is 202100022211201. The reversal of 202100022211121 is 121112220001202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195538412085025 + 6561610126096 = 13983505^2 + 2561564^2 .

It is a cyclic number.

It is not a de Polignac number, because 202100022211121 - 2¹⁸ = 202100021948977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202100022211121.

It is not a weakly prime, because it can be changed into another prime (202100022241121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101050011105560 + 101050011105561.

It is an arithmetic number, because the mean of its divisors is an integer number (101050011105561).

Almost surely, 2^{202100022211121} is an apocalyptic number.

It is an amenable number.

202100022211121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202100022211121 is an equidigital number, since it uses as much as digits as its factorization.

202100022211121 is an evil number, because the sum of its binary digits is even.

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

Adding to 202100022211121 its reverse (121112220001202), we get a palindrome (323212242212323).

The spelling of 202100022211121 in words is "two hundred two trillion, one hundred billion, twenty-two million, two hundred eleven thousand, one hundred twenty-one".