122200121100 has 36 divisors (see below), whose sum is σ = 353565684584. Its totient is φ = 32586698880.

The previous prime is 122200121081. The next prime is 122200121159. The reversal of 122200121100 is 1121002221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203666569 + ... + 203667168.

Almost surely, 2^122200121100 is an apocalyptic number.

122200121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122200121100 is an abundant number, since it is smaller than the sum of its proper divisors (231365563484).

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

122200121100 is a wasteful number, since it uses less digits than its factorization.

122200121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407333754 (or 407333747 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 122200121100 its reverse (1121002221), we get a palindrome (123321123321).

The spelling of 122200121100 in words is "one hundred twenty-two billion, two hundred million, one hundred twenty-one thousand, one hundred".