22190431867 has 2 divisors, whose sum is σ = 22190431868. Its totient is φ = 22190431866.

The previous prime is 22190431843. The next prime is 22190431871. The reversal of 22190431867 is 76813409122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22190431867 is a prime.

It is not a weakly prime, because it can be changed into another prime (22190431807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11095215933 + 11095215934.

It is an arithmetic number, because the mean of its divisors is an integer number (11095215934).

Almost surely, 2^22190431867 is an apocalyptic number.

22190431867 is a deficient number, since it is larger than the sum of its proper divisors (1).

22190431867 is an equidigital number, since it uses as much as digits as its factorization.

22190431867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 22190431867 in words is "twenty-two billion, one hundred ninety million, four hundred thirty-one thousand, eight hundred sixty-seven".