122123111100 has 72 divisors (see below), whose sum is σ = 356125206528. Its totient is φ = 32309726400.

The previous prime is 122123111083. The next prime is 122123111113. The reversal of 122123111100 is 1111321221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 122123111100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1564566 + ... + 1640765.

It is an arithmetic number, because the mean of its divisors is an integer number (4946183424).

Almost surely, 2^122123111100 is an apocalyptic number.

122123111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122123111100 is an abundant number, since it is smaller than the sum of its proper divisors (234002095428).

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

122123111100 is a wasteful number, since it uses less digits than its factorization.

122123111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205475 (or 3205468 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 122123111100 its reverse (1111321221), we get a palindrome (123234432321).

The spelling of 122123111100 in words is "one hundred twenty-two billion, one hundred twenty-three million, one hundred eleven thousand, one hundred".