122139645223 has 2 divisors, whose sum is σ = 122139645224. Its totient is φ = 122139645222.

The previous prime is 122139645169. The next prime is 122139645293. The reversal of 122139645223 is 322546931221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122139645223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122139645293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61069822611 + 61069822612.

It is an arithmetic number, because the mean of its divisors is an integer number (61069822612).

Almost surely, 2^122139645223 is an apocalyptic number.

122139645223 is a deficient number, since it is larger than the sum of its proper divisors (1).

122139645223 is an equidigital number, since it uses as much as digits as its factorization.

122139645223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The spelling of 122139645223 in words is "one hundred twenty-two billion, one hundred thirty-nine million, six hundred forty-five thousand, two hundred twenty-three".