122156557050 has 96 divisors (see below), whose sum is σ = 331243799040. Its totient is φ = 29546078400.

The previous prime is 122156557043. The next prime is 122156557051. The reversal of 122156557050 is 50755651221.

It is not an unprimeable number, because it can be changed into a prime (122156557051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 640029 + ... + 808671.

It is an arithmetic number, because the mean of its divisors is an integer number (3450456240).

Almost surely, 2^122156557050 is an apocalyptic number.

122156557050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122156557050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165621899520).

122156557050 is an abundant number, since it is smaller than the sum of its proper divisors (209087241990).

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

122156557050 is a wasteful number, since it uses less digits than its factorization.

122156557050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169108 (or 169103 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 39.

The spelling of 122156557050 in words is "one hundred twenty-two billion, one hundred fifty-six million, five hundred fifty-seven thousand, fifty".