2022222211921 has 2 divisors, whose sum is σ = 2022222211922. Its totient is φ = 2022222211920.

The previous prime is 2022222211909. The next prime is 2022222211939. The reversal of 2022222211921 is 1291122222202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1870931552400 + 151290659521 = 1367820^2 + 388961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2022222211921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2022222211921.

It is not a weakly prime, because it can be changed into another prime (2022222211901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011111105960 + 1011111105961.

It is an arithmetic number, because the mean of its divisors is an integer number (1011111105961).

Almost surely, 2^{2022222211921} is an apocalyptic number.

It is an amenable number.

2022222211921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022222211921 is an equidigital number, since it uses as much as digits as its factorization.

2022222211921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 2022222211921 in words is "two trillion, twenty-two billion, two hundred twenty-two million, two hundred eleven thousand, nine hundred twenty-one".