1322320121 has 2 divisors, whose sum is σ = 1322320122. Its totient is φ = 1322320120.

The previous prime is 1322320099. The next prime is 1322320123. The reversal of 1322320121 is 1210232231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1313700025 + 8620096 = 36245^2 + 2936^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322320121 - 2¹⁴ = 1322303737 is a prime.

Together with 1322320123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1322320121.

It is not a weakly prime, because it can be changed into another prime (1322320123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661160060 + 661160061.

It is an arithmetic number, because the mean of its divisors is an integer number (661160061).

Almost surely, 2^1322320121 is an apocalyptic number.

It is an amenable number.

1322320121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322320121 is an equidigital number, since it uses as much as digits as its factorization.

1322320121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1322320121 is about 36363.7198454724. The cubic root of 1322320121 is about 1097.6036320245.

Adding to 1322320121 its reverse (1210232231), we get a palindrome (2532552352).

The spelling of 1322320121 in words is "one billion, three hundred twenty-two million, three hundred twenty thousand, one hundred twenty-one".