120012110001 has 16 divisors (see below), whose sum is σ = 203195107200. Its totient is φ = 68578348464.

The previous prime is 120012109999. The next prime is 120012110027. The reversal of 120012110001 is 100011210021.

It is a happy number.

It is not a de Polignac number, because 120012110001 - 2¹ = 120012109999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (120012110081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317492166 + ... + 317492543.

It is an arithmetic number, because the mean of its divisors is an integer number (12699694200).

Almost surely, 2^120012110001 is an apocalyptic number.

It is an amenable number.

120012110001 is a deficient number, since it is larger than the sum of its proper divisors (83182997199).

120012110001 is an equidigital number, since it uses as much as digits as its factorization.

120012110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634984725 (or 634984719 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 120012110001 its reverse (100011210021), we get a palindrome (220023320022).

The spelling of 120012110001 in words is "one hundred twenty billion, twelve million, one hundred ten thousand, one".