1320221323099 has 8 divisors (see below), whose sum is σ = 1511476086240. Its totient is φ = 1129629489216.

The previous prime is 1320221323087. The next prime is 1320221323151. The reversal of 1320221323099 is 9903231220231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320221323099 - 2¹⁷ = 1320221192027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320221323039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165728044 + ... + 165736009.

It is an arithmetic number, because the mean of its divisors is an integer number (188934510780).

Almost surely, 2^{1320221323099} is an apocalyptic number.

1320221323099 is a deficient number, since it is larger than the sum of its proper divisors (191254763141).

1320221323099 is an equidigital number, since it uses as much as digits as its factorization.

1320221323099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331464629.

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 1320221323099 in words is "one trillion, three hundred twenty billion, two hundred twenty-one million, three hundred twenty-three thousand, ninety-nine".