122057137686 has 128 divisors (see below), whose sum is σ = 275699635200. Its totient is φ = 35709672960.

The previous prime is 122057137681. The next prime is 122057137703. The reversal of 122057137686 is 686731750221.

It is a super-2 number, since 2×122057137686² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122057137681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59860255 + ... + 59862293.

It is an arithmetic number, because the mean of its divisors is an integer number (2153903400).

Almost surely, 2^122057137686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122057137686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137849817600).

122057137686 is an abundant number, since it is smaller than the sum of its proper divisors (153642497514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122057137686 is a wasteful number, since it uses less digits than its factorization.

122057137686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 122057137686 in words is "one hundred twenty-two billion, fifty-seven million, one hundred thirty-seven thousand, six hundred eighty-six".