12120011291 has 2 divisors, whose sum is σ = 12120011292. Its totient is φ = 12120011290.

The previous prime is 12120011287. The next prime is 12120011303. The reversal of 12120011291 is 19211002121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12120011291 - 2² = 12120011287 is a prime.

It is not a weakly prime, because it can be changed into another prime (12120011191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060005645 + 6060005646.

It is an arithmetic number, because the mean of its divisors is an integer number (6060005646).

Almost surely, 2^12120011291 is an apocalyptic number.

12120011291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120011291 is an equidigital number, since it uses as much as digits as its factorization.

12120011291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 12120011291 in words is "twelve billion, one hundred twenty million, eleven thousand, two hundred ninety-one".