122639045117 has 4 divisors (see below), whose sum is σ = 122650937916. Its totient is φ = 122627152320.

The previous prime is 122639045107. The next prime is 122639045147. The reversal of 122639045117 is 711540936221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51999505156 + 70639539961 = 228034^2 + 265781^2 .

It is a cyclic number.

It is not a de Polignac number, because 122639045117 - 2³² = 118344077821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122639045107) 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 in 3 ways as a sum of consecutive naturals, for example, 5930918 + ... + 5951559.

It is an arithmetic number, because the mean of its divisors is an integer number (30662734479).

Almost surely, 2^122639045117 is an apocalyptic number.

It is an amenable number.

122639045117 is a deficient number, since it is larger than the sum of its proper divisors (11892799).

122639045117 is a wasteful number, since it uses less digits than its factorization.

122639045117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11892798.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 122639045117 in words is "one hundred twenty-two billion, six hundred thirty-nine million, forty-five thousand, one hundred seventeen".