122209997951 has 2 divisors, whose sum is σ = 122209997952. Its totient is φ = 122209997950.

The previous prime is 122209997867. The next prime is 122209997993. The reversal of 122209997951 is 159799902221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122209997951 - 2¹⁸ = 122209735807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122209997051) 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, 61104998975 + 61104998976.

It is an arithmetic number, because the mean of its divisors is an integer number (61104998976).

Almost surely, 2^122209997951 is an apocalyptic number.

122209997951 is a deficient number, since it is larger than the sum of its proper divisors (1).

122209997951 is an equidigital number, since it uses as much as digits as its factorization.

122209997951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The spelling of 122209997951 in words is "one hundred twenty-two billion, two hundred nine million, nine hundred ninety-seven thousand, nine hundred fifty-one".