1322323125521 has 4 divisors (see below), whose sum is σ = 1322555077044. Its totient is φ = 1322091174000.

The previous prime is 1322323125511. The next prime is 1322323125527. The reversal of 1322323125521 is 1255213232231.

It is a happy number.

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 759493077121 + 562830048400 = 871489^2 + 750220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322323125521 - 2¹⁸ = 1322322863377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322323125527) 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, 115967210 + ... + 115978611.

It is an arithmetic number, because the mean of its divisors is an integer number (330638769261).

Almost surely, 2^{1322323125521} is an apocalyptic number.

It is an amenable number.

1322323125521 is a deficient number, since it is larger than the sum of its proper divisors (231951523).

1322323125521 is an equidigital number, since it uses as much as digits as its factorization.

1322323125521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231951522.

The product of its digits is 21600, while the sum is 32.

Adding to 1322323125521 its reverse (1255213232231), we get a palindrome (2577536357752).

The spelling of 1322323125521 in words is "one trillion, three hundred twenty-two billion, three hundred twenty-three million, one hundred twenty-five thousand, five hundred twenty-one".