122891899936 has 96 divisors (see below), whose sum is σ = 262320968448. Its totient is φ = 56336117760.

The previous prime is 122891899853. The next prime is 122891899939. The reversal of 122891899936 is 639998198221.

It is not an unprimeable number, because it can be changed into a prime (122891899939) 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 15 ways as a sum of consecutive naturals, for example, 44412025 + ... + 44414791.

It is an arithmetic number, because the mean of its divisors is an integer number (2732510088).

Almost surely, 2^122891899936 is an apocalyptic number.

122891899936 is a gapful number since it is divisible by the number (16) 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 122891899936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131160484224).

122891899936 is an abundant number, since it is smaller than the sum of its proper divisors (139429068512).

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

122891899936 is a wasteful number, since it uses less digits than its factorization.

122891899936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474 (or 3466 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 67.

The spelling of 122891899936 in words is "one hundred twenty-two billion, eight hundred ninety-one million, eight hundred ninety-nine thousand, nine hundred thirty-six".