120120121100 has 72 divisors (see below), whose sum is σ = 298290679008. Its totient is φ = 41129740800.

The previous prime is 120120121049. The next prime is 120120121123. The reversal of 120120121100 is 1121021021.

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, 419954 + ... + 645446.

Almost surely, 2^120120121100 is an apocalyptic number.

120120121100 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 120120121100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149145339504).

120120121100 is an abundant number, since it is smaller than the sum of its proper divisors (178170557908).

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

120120121100 is a wasteful number, since it uses less digits than its factorization.

120120121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226275 (or 226268 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 120120121100 its reverse (1121021021), we get a palindrome (121241142121).

The spelling of 120120121100 in words is "one hundred twenty billion, one hundred twenty million, one hundred twenty-one thousand, one hundred".