122102201988 has 36 divisors (see below), whose sum is σ = 332389328908. Its totient is φ = 37569908160.

The previous prime is 122102201987. The next prime is 122102202031. The reversal of 122102201988 is 889102201221.

It can be written as a sum of positive squares in 2 ways, for example, as 66774694464 + 55327507524 = 258408^2 + 235218^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (122102201983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130450603 + ... + 130451538.

Almost surely, 2^122102201988 is an apocalyptic number.

122102201988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

122102201988 is an abundant number, since it is smaller than the sum of its proper divisors (210287126920).

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

122102201988 is a wasteful number, since it uses less digits than its factorization.

122102201988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260902164 (or 260902159 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 122102201988 in words is "one hundred twenty-two billion, one hundred two million, two hundred one thousand, nine hundred eighty-eight".