1321202111313 has 32 divisors (see below), whose sum is σ = 2126763325440. Its totient is φ = 712691844480.

The previous prime is 1321202111309. The next prime is 1321202111321. The reversal of 1321202111313 is 3131112021231.

It is not a de Polignac number, because 1321202111313 - 2² = 1321202111309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1321202111313.

It is not an unprimeable number, because it can be changed into a prime (1321202116313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5779845 + ... + 6004082.

It is an arithmetic number, because the mean of its divisors is an integer number (66461353920).

Almost surely, 2^{1321202111313} is an apocalyptic number.

It is an amenable number.

1321202111313 is a deficient number, since it is larger than the sum of its proper divisors (805561214127).

1321202111313 is a wasteful number, since it uses less digits than its factorization.

1321202111313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11784237.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1321202111313 its reverse (3131112021231), we get a palindrome (4452314132544).

The spelling of 1321202111313 in words is "one trillion, three hundred twenty-one billion, two hundred two million, one hundred eleven thousand, three hundred thirteen".