1201023412291 has 2 divisors, whose sum is σ = 1201023412292. Its totient is φ = 1201023412290.

The previous prime is 1201023412159. The next prime is 1201023412343. The reversal of 1201023412291 is 1922143201021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201023412291 is a prime.

It is a super-2 number, since 2×1201023412291² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1201023416291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600511706145 + 600511706146.

It is an arithmetic number, because the mean of its divisors is an integer number (600511706146).

Almost surely, 2^{1201023412291} is an apocalyptic number.

1201023412291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201023412291 is an equidigital number, since it uses as much as digits as its factorization.

1201023412291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 1201023412291 in words is "one trillion, two hundred one billion, twenty-three million, four hundred twelve thousand, two hundred ninety-one".