122691993249 has 16 divisors (see below), whose sum is σ = 188431351808. Its totient is φ = 69557663952.

The previous prime is 122691993239. The next prime is 122691993269. The reversal of 122691993249 is 942399196221.

It is not a de Polignac number, because 122691993249 - 2⁵ = 122691993217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122691993209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22999207 + ... + 23004540.

It is an arithmetic number, because the mean of its divisors is an integer number (11776959488).

Almost surely, 2^122691993249 is an apocalyptic number.

It is an amenable number.

122691993249 is a deficient number, since it is larger than the sum of its proper divisors (65739358559).

122691993249 is a wasteful number, since it uses less digits than its factorization.

122691993249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46003884.

The product of its digits is 3779136, while the sum is 57.

The spelling of 122691993249 in words is "one hundred twenty-two billion, six hundred ninety-one million, nine hundred ninety-three thousand, two hundred forty-nine".