1322311223021 has 4 divisors (see below), whose sum is σ = 1322347312572. Its totient is φ = 1322275133472.

The previous prime is 1322311222997. The next prime is 1322311223047. The reversal of 1322311223021 is 1203221132231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 983645420521 + 338665802500 = 991789^2 + 581950^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322311223021 - 2¹⁰ = 1322311221997 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 (1322311223921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17989760 + ... + 18063113.

It is an arithmetic number, because the mean of its divisors is an integer number (330586828143).

Almost surely, 2^{1322311223021} is an apocalyptic number.

It is an amenable number.

1322311223021 is a deficient number, since it is larger than the sum of its proper divisors (36089551).

1322311223021 is an equidigital number, since it uses as much as digits as its factorization.

1322311223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36089550.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1322311223021 its reverse (1203221132231), we get a palindrome (2525532355252).

The spelling of 1322311223021 in words is "one trillion, three hundred twenty-two billion, three hundred eleven million, two hundred twenty-three thousand, twenty-one".