22212909337897 has 2 divisors, whose sum is σ = 22212909337898. Its totient is φ = 22212909337896.

The previous prime is 22212909337781. The next prime is 22212909337901. The reversal of 22212909337897 is 79873390921222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19459602980416 + 2753306357481 = 4411304^2 + 1659309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22212909337897 is a prime.

It is not a weakly prime, because it can be changed into another prime (22212909331897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106454668948 + 11106454668949.

It is an arithmetic number, because the mean of its divisors is an integer number (11106454668949).

Almost surely, 2^{22212909337897} is an apocalyptic number.

It is an amenable number.

22212909337897 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212909337897 is an equidigital number, since it uses as much as digits as its factorization.

22212909337897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41150592, while the sum is 64.

The spelling of 22212909337897 in words is "twenty-two trillion, two hundred twelve billion, nine hundred nine million, three hundred thirty-seven thousand, eight hundred ninety-seven".