222345121591 has 2 divisors, whose sum is σ = 222345121592. Its totient is φ = 222345121590.

The previous prime is 222345121567. The next prime is 222345121613. The reversal of 222345121591 is 195121543222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222345121591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222345121591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222345121291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111172560795 + 111172560796.

It is an arithmetic number, because the mean of its divisors is an integer number (111172560796).

Almost surely, 2^222345121591 is an apocalyptic number.

222345121591 is a deficient number, since it is larger than the sum of its proper divisors (1).

222345121591 is an equidigital number, since it uses as much as digits as its factorization.

222345121591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The spelling of 222345121591 in words is "two hundred twenty-two billion, three hundred forty-five million, one hundred twenty-one thousand, five hundred ninety-one".