122120111100 has 144 divisors (see below), whose sum is σ = 382428300800. Its totient is φ = 29909088000.

The previous prime is 122120111059. The next prime is 122120111107. The reversal of 122120111100 is 1111021221.

122120111100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122120111107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 697425 + ... + 854775.

Almost surely, 2^122120111100 is an apocalyptic number.

122120111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122120111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191214150400).

122120111100 is an abundant number, since it is smaller than the sum of its proper divisors (260308189700).

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

122120111100 is a wasteful number, since it uses less digits than its factorization.

122120111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157580 (or 157573 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 122120111100 its reverse (1111021221), we get a palindrome (123231132321).

The spelling of 122120111100 in words is "one hundred twenty-two billion, one hundred twenty million, one hundred eleven thousand, one hundred".