120104512155 has 40 divisors (see below), whose sum is σ = 216543084912. Its totient is φ = 63685438272.

The previous prime is 120104512139. The next prime is 120104512183. The reversal of 120104512155 is 551215401021.

It is a happy number.

120104512155 is a `hidden beast` number, since 1 + 201 + 0 + 451 + 2 + 1 + 5 + 5 = 666.

120104512155 is digitally balanced in base 11, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 120104512155 - 2⁴ = 120104512139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

120104512155 is strictly pandigital in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 787029 + ... + 927158.

Almost surely, 2^120104512155 is an apocalyptic number.

120104512155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120104512155 is a deficient number, since it is larger than the sum of its proper divisors (96438572757).

120104512155 is a wasteful number, since it uses less digits than its factorization.

120104512155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714377 (or 1714368 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 120104512155 its reverse (551215401021), we get a palindrome (671319913176).

The spelling of 120104512155 in words is "one hundred twenty billion, one hundred four million, five hundred twelve thousand, one hundred fifty-five".