1201331011291 has 2 divisors, whose sum is σ = 1201331011292. Its totient is φ = 1201331011290.

The previous prime is 1201331011187. The next prime is 1201331011351. The reversal of 1201331011291 is 1921101331021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201331011291 - 2⁷ = 1201331011163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201331011591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600665505645 + 600665505646.

It is an arithmetic number, because the mean of its divisors is an integer number (600665505646).

Almost surely, 2^{1201331011291} is an apocalyptic number.

1201331011291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201331011291 is an equidigital number, since it uses as much as digits as its factorization.

1201331011291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 1201331011291 in words is "one trillion, two hundred one billion, three hundred thirty-one million, eleven thousand, two hundred ninety-one".