120012102100 has 36 divisors (see below), whose sum is σ = 284101378848. Its totient is φ = 43640764000.

The previous prime is 120012102079. The next prime is 120012102101. The reversal of 120012102100 is 1201210021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012102101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54549856 + ... + 54552055.

It is an arithmetic number, because the mean of its divisors is an integer number (7891704968).

Almost surely, 2^120012102100 is an apocalyptic number.

120012102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120012102100 is an abundant number, since it is smaller than the sum of its proper divisors (164089276748).

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

120012102100 is a wasteful number, since it uses less digits than its factorization.

120012102100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109101936 (or 109101929 counting only the distinct ones).

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

Adding to 120012102100 its reverse (1201210021), we get a palindrome (121213312121).

The spelling of 120012102100 in words is "one hundred twenty billion, twelve million, one hundred two thousand, one hundred".