122155122660 has 96 divisors (see below), whose sum is σ = 345718800000. Its totient is φ = 32224358400.

The previous prime is 122155122653. The next prime is 122155122673. The reversal of 122155122660 is 66221551221.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 7560871 + ... + 7577009.

It is an arithmetic number, because the mean of its divisors is an integer number (3601237500).

Almost surely, 2^122155122660 is an apocalyptic number.

122155122660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122155122660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172859400000).

122155122660 is an abundant number, since it is smaller than the sum of its proper divisors (223563677340).

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

122155122660 is a wasteful number, since it uses less digits than its factorization.

122155122660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17501 (or 17499 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 122155122660 its reverse (66221551221), we get a palindrome (188376673881).

The spelling of 122155122660 in words is "one hundred twenty-two billion, one hundred fifty-five million, one hundred twenty-two thousand, six hundred sixty".