122751557081 has 2 divisors, whose sum is σ = 122751557082. Its totient is φ = 122751557080.

The previous prime is 122751557041. The next prime is 122751557113. The reversal of 122751557081 is 180755157221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87713707225 + 35037849856 = 296165^2 + 187184^2 .

It is a cyclic number.

It is not a de Polignac number, because 122751557081 - 2²⁶ = 122684448217 is a prime.

It is a super-2 number, since 2×122751557081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122751557041) 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, 61375778540 + 61375778541.

It is an arithmetic number, because the mean of its divisors is an integer number (61375778541).

Almost surely, 2^122751557081 is an apocalyptic number.

It is an amenable number.

122751557081 is a deficient number, since it is larger than the sum of its proper divisors (1).

122751557081 is an equidigital number, since it uses as much as digits as its factorization.

122751557081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196000, while the sum is 44.

The spelling of 122751557081 in words is "one hundred twenty-two billion, seven hundred fifty-one million, five hundred fifty-seven thousand, eighty-one".