120001002100000 has 144 divisors (see below), whose sum is σ = 337481220194496. Its totient is φ = 41143200480000.

The previous prime is 120001002099983. The next prime is 120001002100027. The reversal of 120001002100000 is 1200100021.

It is a Harshad number since it is a multiple of its sum of digits (7).

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, 85015002 + ... + 86415001.

It is an arithmetic number, because the mean of its divisors is an integer number (2343619584684).

Almost surely, 2^{120001002100000} is an apocalyptic number.

120001002100000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120001002100000 is an abundant number, since it is smaller than the sum of its proper divisors (217480218094496).

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

120001002100000 is an frugal number, since it uses more digits than its factorization.

120001002100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171430045 (or 171430017 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 120001002100000 its reverse (1200100021), we get a palindrome (120002202200021).

The spelling of 120001002100000 in words is "one hundred twenty trillion, one billion, two million, one hundred thousand".