122101200100 has 72 divisors (see below), whose sum is σ = 291126679200. Its totient is φ = 44080953600.

The previous prime is 122101200097. The next prime is 122101200101. The reversal of 122101200100 is 1002101221.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (122101200101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246385 + ... + 552184.

It is an arithmetic number, because the mean of its divisors is an integer number (4043426100).

Almost surely, 2^122101200100 is an apocalyptic number.

122101200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122101200100 is an abundant number, since it is smaller than the sum of its proper divisors (169025479100).

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

122101200100 is a wasteful number, since it uses less digits than its factorization.

122101200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798733 (or 798726 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 122101200100 its reverse (1002101221), we get a palindrome (123103301321).

The spelling of 122101200100 in words is "one hundred twenty-two billion, one hundred one million, two hundred thousand, one hundred".