12001001978291 has 2 divisors, whose sum is σ = 12001001978292. Its totient is φ = 12001001978290.

The previous prime is 12001001978233. The next prime is 12001001978293. The reversal of 12001001978291 is 19287910010021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12001001978291 - 2⁴² = 7602955467187 is a prime.

Together with 12001001978293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12001001978293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000500989145 + 6000500989146.

It is an arithmetic number, because the mean of its divisors is an integer number (6000500989146).

Almost surely, 2^{12001001978291} is an apocalyptic number.

12001001978291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001001978291 is an equidigital number, since it uses as much as digits as its factorization.

12001001978291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 41.

The spelling of 12001001978291 in words is "twelve trillion, one billion, one million, nine hundred seventy-eight thousand, two hundred ninety-one".