1201331201311 has 2 divisors, whose sum is σ = 1201331201312. Its totient is φ = 1201331201310.

The previous prime is 1201331201251. The next prime is 1201331201321. The reversal of 1201331201311 is 1131021331021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201331201311 - 2⁹ = 1201331200799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201331201321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600665600655 + 600665600656.

It is an arithmetic number, because the mean of its divisors is an integer number (600665600656).

Almost surely, 2^{1201331201311} is an apocalyptic number.

1201331201311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201331201311 is an equidigital number, since it uses as much as digits as its factorization.

1201331201311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1201331201311 its reverse (1131021331021), we get a palindrome (2332352532332).

The spelling of 1201331201311 in words is "one trillion, two hundred one billion, three hundred thirty-one million, two hundred one thousand, three hundred eleven".