122099981929 has 2 divisors, whose sum is σ = 122099981930. Its totient is φ = 122099981928.

The previous prime is 122099981917. The next prime is 122099981963. The reversal of 122099981929 is 929189990221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112603869225 + 9496112704 = 335565^2 + 97448^2 .

It is an emirp because it is prime and its reverse (929189990221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122099981929 - 2²³ = 122091593321 is a prime.

It is a super-2 number, since 2×122099981929² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122099988929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61049990964 + 61049990965.

It is an arithmetic number, because the mean of its divisors is an integer number (61049990965).

Almost surely, 2^122099981929 is an apocalyptic number.

It is an amenable number.

122099981929 is a deficient number, since it is larger than the sum of its proper divisors (1).

122099981929 is an equidigital number, since it uses as much as digits as its factorization.

122099981929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 61.

The spelling of 122099981929 in words is "one hundred twenty-two billion, ninety-nine million, nine hundred eighty-one thousand, nine hundred twenty-nine".