22312998857 has 2 divisors, whose sum is σ = 22312998858. Its totient is φ = 22312998856.

The previous prime is 22312998833. The next prime is 22312998889. The reversal of 22312998857 is 75889921322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22281234361 + 31764496 = 149269^2 + 5636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22312998857 is a prime.

It is a super-3 number, since 3×22312998857³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (22312997857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11156499428 + 11156499429.

It is an arithmetic number, because the mean of its divisors is an integer number (11156499429).

Almost surely, 2^22312998857 is an apocalyptic number.

It is an amenable number.

22312998857 is a deficient number, since it is larger than the sum of its proper divisors (1).

22312998857 is an equidigital number, since it uses as much as digits as its factorization.

22312998857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 56.

The spelling of 22312998857 in words is "twenty-two billion, three hundred twelve million, nine hundred ninety-eight thousand, eight hundred fifty-seven".