1320122331311 has 16 divisors (see below), whose sum is σ = 1597491618624. Its totient is φ = 1064950861824.

The previous prime is 1320122331263. The next prime is 1320122331313. The reversal of 1320122331311 is 1131332210231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320122331311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320122331313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8413271 + ... + 8568743.

It is an arithmetic number, because the mean of its divisors is an integer number (99843226164).

Almost surely, 2^{1320122331311} is an apocalyptic number.

1320122331311 is a deficient number, since it is larger than the sum of its proper divisors (277369287313).

1320122331311 is a wasteful number, since it uses less digits than its factorization.

1320122331311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226850.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1320122331311 its reverse (1131332210231), we get a palindrome (2451454541542).

The spelling of 1320122331311 in words is "one trillion, three hundred twenty billion, one hundred twenty-two million, three hundred thirty-one thousand, three hundred eleven".