122510885491 has 2 divisors, whose sum is σ = 122510885492. Its totient is φ = 122510885490.

The previous prime is 122510885389. The next prime is 122510885531. The reversal of 122510885491 is 194588015221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122510885491 - 2¹³ = 122510877299 is a prime.

It is a super-2 number, since 2×122510885491² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122510805491) 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, 61255442745 + 61255442746.

It is an arithmetic number, because the mean of its divisors is an integer number (61255442746).

Almost surely, 2^122510885491 is an apocalyptic number.

122510885491 is a deficient number, since it is larger than the sum of its proper divisors (1).

122510885491 is an equidigital number, since it uses as much as digits as its factorization.

122510885491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230400, while the sum is 46.

It can be divided in two parts, 122510 and 885491, that added together give a palindrome (1008001).

The spelling of 122510885491 in words is "one hundred twenty-two billion, five hundred ten million, eight hundred eighty-five thousand, four hundred ninety-one".