120111222120100 has 72 divisors (see below), whose sum is σ = 272043039256128. Its totient is φ = 45943862236800.

The previous prime is 120111222120049. The next prime is 120111222120133. The reversal of 120111222120100 is 1021222111021.

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, 2342995 + ... + 15675205.

It is an arithmetic number, because the mean of its divisors is an integer number (3778375545224).

Almost surely, 2^{120111222120100} is an apocalyptic number.

120111222120100 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 120111222120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136021519628064).

120111222120100 is an abundant number, since it is smaller than the sum of its proper divisors (151931817136028).

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

120111222120100 is a wasteful number, since it uses less digits than its factorization.

120111222120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13336165 (or 13336158 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120111222120100 its reverse (1021222111021), we get a palindrome (121132444231121).

The spelling of 120111222120100 in words is "one hundred twenty trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twenty thousand, one hundred".