122155265140 has 24 divisors (see below), whose sum is σ = 258484276512. Its totient is φ = 48489111840.

The previous prime is 122155265131. The next prime is 122155265143. The reversal of 122155265140 is 41562551221.

It is a junction number, because it is equal to n+sod(n) for n = 122155265096 and 122155265105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122155265143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23309454 + ... + 23314693.

It is an arithmetic number, because the mean of its divisors is an integer number (10770178188).

Almost surely, 2^122155265140 is an apocalyptic number.

122155265140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122155265140 is an abundant number, since it is smaller than the sum of its proper divisors (136329011372).

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

122155265140 is a wasteful number, since it uses less digits than its factorization.

122155265140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46624287 (or 46624285 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 122155265140 in words is "one hundred twenty-two billion, one hundred fifty-five million, two hundred sixty-five thousand, one hundred forty".