1320122209 has 4 divisors (see below), whose sum is σ = 1508711104. Its totient is φ = 1131533316.

The previous prime is 1320122203. The next prime is 1320122333. The reversal of 1320122209 is 9022210231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9022210231 = 14723 ⋅612797.

It is a cyclic number.

It is not a de Polignac number, because 1320122209 - 2²⁹ = 783251297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320122209.

It is not an unprimeable number, because it can be changed into a prime (1320122203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94294437 + ... + 94294450.

It is an arithmetic number, because the mean of its divisors is an integer number (377177776).

Almost surely, 2^1320122209 is an apocalyptic number.

It is an amenable number.

1320122209 is a deficient number, since it is larger than the sum of its proper divisors (188588895).

1320122209 is an equidigital number, since it uses as much as digits as its factorization.

1320122209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188588894.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1320122209 is about 36333.4860562539. The cubic root of 1320122209 is about 1096.9951626097.

The spelling of 1320122209 in words is "one billion, three hundred twenty million, one hundred twenty-two thousand, two hundred nine".