1222399323 has 8 divisors (see below), whose sum is σ = 1810962000. Its totient is φ = 814932864.

The previous prime is 1222399319. The next prime is 1222399361. The reversal of 1222399323 is 3239932221.

It is not a de Polignac number, because 1222399323 - 2² = 1222399319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1222392323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22636998 + ... + 22637051.

It is an arithmetic number, because the mean of its divisors is an integer number (226370250).

Almost surely, 2^1222399323 is an apocalyptic number.

1222399323 is a deficient number, since it is larger than the sum of its proper divisors (588562677).

1222399323 is an equidigital number, since it uses as much as digits as its factorization.

1222399323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45274058 (or 45274052 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 1222399323 is about 34962.8277317496. The cubic root of 1222399323 is about 1069.2297490340.

The spelling of 1222399323 in words is "one billion, two hundred twenty-two million, three hundred ninety-nine thousand, three hundred twenty-three".