1321131233111 has 2 divisors, whose sum is σ = 1321131233112. Its totient is φ = 1321131233110.

The previous prime is 1321131233101. The next prime is 1321131233117. The reversal of 1321131233111 is 1113321311231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321131233111 - 2⁶ = 1321131233047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321131233117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660565616555 + 660565616556.

It is an arithmetic number, because the mean of its divisors is an integer number (660565616556).

Almost surely, 2^{1321131233111} is an apocalyptic number.

1321131233111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321131233111 is an equidigital number, since it uses as much as digits as its factorization.

1321131233111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 23.

Adding to 1321131233111 its reverse (1113321311231), we get a palindrome (2434452544342).

The spelling of 1321131233111 in words is "one trillion, three hundred twenty-one billion, one hundred thirty-one million, two hundred thirty-three thousand, one hundred eleven".