1321322299 has 16 divisors (see below), whose sum is σ = 1467894240. Its totient is φ = 1189188000.

The previous prime is 1321322291. The next prime is 1321322309. The reversal of 1321322299 is 9922231231.

It is not a de Polignac number, because 1321322299 - 2³ = 1321322291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321322291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129517 + ... + 139345.

It is an arithmetic number, because the mean of its divisors is an integer number (91743390).

Almost surely, 2^1321322299 is an apocalyptic number.

1321322299 is a deficient number, since it is larger than the sum of its proper divisors (146571941).

1321322299 is an equidigital number, since it uses as much as digits as its factorization.

1321322299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9963 (or 9941 counting only the distinct ones).

The product of its digits is 11664, while the sum is 34.

The square root of 1321322299 is about 36349.9972352131. The cubic root of 1321322299 is about 1097.3274788622.

It can be divided in two parts, 132132 and 2299, that added together give a palindrome (134431).

The spelling of 1321322299 in words is "one billion, three hundred twenty-one million, three hundred twenty-two thousand, two hundred ninety-nine".