222912943397 has 2 divisors, whose sum is σ = 222912943398. Its totient is φ = 222912943396.

The previous prime is 222912943361. The next prime is 222912943399. The reversal of 222912943397 is 793349219222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122331358081 + 100581585316 = 349759^2 + 317146^2 .

It is a cyclic number.

It is not a de Polignac number, because 222912943397 - 2¹⁸ = 222912681253 is a prime.

Together with 222912943399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222912943399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111456471698 + 111456471699.

It is an arithmetic number, because the mean of its divisors is an integer number (111456471699).

Almost surely, 2^222912943397 is an apocalyptic number.

It is an amenable number.

222912943397 is a deficient number, since it is larger than the sum of its proper divisors (1).

222912943397 is an equidigital number, since it uses as much as digits as its factorization.

222912943397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 53.

The spelling of 222912943397 in words is "two hundred twenty-two billion, nine hundred twelve million, nine hundred forty-three thousand, three hundred ninety-seven".