120012320100 has 108 divisors (see below), whose sum is σ = 366473408784. Its totient is φ = 30318874560.

The previous prime is 120012320047. The next prime is 120012320101. The reversal of 120012320100 is 1023210021.

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

It is not an unprimeable number, because it can be changed into a prime (120012320101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 445774 + ... + 662373.

Almost surely, 2^120012320100 is an apocalyptic number.

120012320100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120012320100 is an abundant number, since it is smaller than the sum of its proper divisors (246461088684).

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

120012320100 is a wasteful number, since it uses less digits than its factorization.

120012320100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108202 (or 1108176 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 120012320100 its reverse (1023210021), we get a palindrome (121035530121).

The spelling of 120012320100 in words is "one hundred twenty billion, twelve million, three hundred twenty thousand, one hundred".