1201131321239 has 2 divisors, whose sum is σ = 1201131321240. Its totient is φ = 1201131321238.

The previous prime is 1201131321227. The next prime is 1201131321241. The reversal of 1201131321239 is 9321231311021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201131321239 is a prime.

It is a super-2 number, since 2×1201131321239² (a number of 25 digits) contains 22 as substring.

Together with 1201131321241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201131321139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600565660619 + 600565660620.

It is an arithmetic number, because the mean of its divisors is an integer number (600565660620).

Almost surely, 2^{1201131321239} is an apocalyptic number.

1201131321239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201131321239 is an equidigital number, since it uses as much as digits as its factorization.

1201131321239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 1201131321239 in words is "one trillion, two hundred one billion, one hundred thirty-one million, three hundred twenty-one thousand, two hundred thirty-nine".