12000120291 has 12 divisors (see below), whose sum is σ = 17592217032. Its totient is φ = 7880675616.

The previous prime is 12000120281. The next prime is 12000120317. The reversal of 12000120291 is 19202100021.

It is not a de Polignac number, because 12000120291 - 2¹¹ = 12000118243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12000120281) 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, 9949746 + ... + 9950951.

It is an arithmetic number, because the mean of its divisors is an integer number (1466018086).

Almost surely, 2^12000120291 is an apocalyptic number.

12000120291 is a deficient number, since it is larger than the sum of its proper divisors (5592096741).

12000120291 is a wasteful number, since it uses less digits than its factorization.

12000120291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19900770 (or 19900767 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 12000120291 in words is "twelve billion, one hundred twenty thousand, two hundred ninety-one".