202222010111921 has 2 divisors, whose sum is σ = 202222010111922. Its totient is φ = 202222010111920.

The previous prime is 202222010111837. The next prime is 202222010111929. The reversal of 202222010111921 is 129111010222202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109170211887025 + 93051798224896 = 10448455^2 + 9646336^2 .

It is a cyclic number.

It is not a de Polignac number, because 202222010111921 - 2²⁶ = 202221943003057 is a prime.

It is not a weakly prime, because it can be changed into another prime (202222010111929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101111005055960 + 101111005055961.

It is an arithmetic number, because the mean of its divisors is an integer number (101111005055961).

Almost surely, 2^{202222010111921} is an apocalyptic number.

It is an amenable number.

202222010111921 is a deficient number, since it is larger than the sum of its proper divisors (1).

202222010111921 is an equidigital number, since it uses as much as digits as its factorization.

202222010111921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 202222010111921 in words is "two hundred two trillion, two hundred twenty-two billion, ten million, one hundred eleven thousand, nine hundred twenty-one".