1223302009 has 4 divisors (see below), whose sum is σ = 1224311716. Its totient is φ = 1222292304.

The previous prime is 1223301971. The next prime is 1223302027. The reversal of 1223302009 is 9002033221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9002033221 = 11987 ⋅750983.

It can be written as a sum of positive squares in 2 ways, for example, as 654336400 + 568965609 = 25580^2 + 23853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223302009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223302039) 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, 503034 + ... + 505459.

It is an arithmetic number, because the mean of its divisors is an integer number (306077929).

Almost surely, 2^1223302009 is an apocalyptic number.

It is an amenable number.

1223302009 is a deficient number, since it is larger than the sum of its proper divisors (1009707).

1223302009 is a wasteful number, since it uses less digits than its factorization.

1223302009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009706.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1223302009 is about 34975.7345741301. The cubic root of 1223302009 is about 1069.4928767001.

The spelling of 1223302009 in words is "one billion, two hundred twenty-three million, three hundred two thousand, nine".