1321022331323 has 16 divisors (see below), whose sum is σ = 1337597706816. Its totient is φ = 1304518886400.

The previous prime is 1321022331313. The next prime is 1321022331329. The reversal of 1321022331323 is 3231332201231.

It is a cyclic number.

It is not a de Polignac number, because 1321022331323 - 2⁸ = 1321022331067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321022331292 and 1321022331301.

It is not an unprimeable number, because it can be changed into a prime (1321022331329) 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, 90269615 + ... + 90284247.

It is an arithmetic number, because the mean of its divisors is an integer number (83599856676).

Almost surely, 2^{1321022331323} is an apocalyptic number.

1321022331323 is a deficient number, since it is larger than the sum of its proper divisors (16575375493).

1321022331323 is a wasteful number, since it uses less digits than its factorization.

1321022331323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17014.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1321022331323 its reverse (3231332201231), we get a palindrome (4552354532554).

The spelling of 1321022331323 in words is "one trillion, three hundred twenty-one billion, twenty-two million, three hundred thirty-one thousand, three hundred twenty-three".