22202891 has 2 divisors, whose sum is σ = 22202892. Its totient is φ = 22202890.

The previous prime is 22202857. The next prime is 22202903. The reversal of 22202891 is 19820222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22202891 - 2⁶ = 22202827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22202891.

It is not a weakly prime, because it can be changed into another prime (22202801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11101445 + 11101446.

It is an arithmetic number, because the mean of its divisors is an integer number (11101446).

Almost surely, 2^22202891 is an apocalyptic number.

22202891 is a deficient number, since it is larger than the sum of its proper divisors (1).

22202891 is an equidigital number, since it uses as much as digits as its factorization.

22202891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 22202891 is about 4711.9943760578. The cubic root of 22202891 is about 281.0626751953.

The spelling of 22202891 in words is "twenty-two million, two hundred two thousand, eight hundred ninety-one".