122100210120 has 128 divisors (see below), whose sum is σ = 423928627200. Its totient is φ = 27555330816.

The previous prime is 122100210119. The next prime is 122100210173. The reversal of 122100210120 is 21012001221.

It is a super-2 number, since 2×122100210120² (a number of 23 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 122100210096 and 122100210105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 853624 + ... + 986343.

It is an arithmetic number, because the mean of its divisors is an integer number (3311942400).

Almost surely, 2^122100210120 is an apocalyptic number.

122100210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122100210120 is an abundant number, since it is smaller than the sum of its proper divisors (301828417080).

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

122100210120 is a wasteful number, since it uses less digits than its factorization.

122100210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840067 (or 1840063 counting only the distinct ones).

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

Adding to 122100210120 its reverse (21012001221), we get a palindrome (143112211341).

The spelling of 122100210120 in words is "one hundred twenty-two billion, one hundred million, two hundred ten thousand, one hundred twenty".