120012021100 has 36 divisors (see below), whose sum is σ = 260450002008. Its totient is φ = 48000400000.

The previous prime is 120012021049. The next prime is 120012021131. The reversal of 120012021100 is 1120210021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1176120 + ... + 1274080.

It is an arithmetic number, because the mean of its divisors is an integer number (7234722278).

Almost surely, 2^120012021100 is an apocalyptic number.

120012021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120012021100 is an abundant number, since it is smaller than the sum of its proper divisors (140437980908).

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

120012021100 is a wasteful number, since it uses less digits than its factorization.

120012021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110226 (or 110219 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120012021100 its reverse (1120210021), we get a palindrome (121132231121).

The spelling of 120012021100 in words is "one hundred twenty billion, twelve million, twenty-one thousand, one hundred".