1222258799 has 4 divisors (see below), whose sum is σ = 1222682736. Its totient is φ = 1221834864.

The previous prime is 1222258781. The next prime is 1222258859. The reversal of 1222258799 is 9978522221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9978522221 = 239 ⋅41751139.

It is a cyclic number.

It is not a de Polignac number, because 1222258799 - 2²⁰ = 1221210223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222258759) 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, 207614 + ... + 213419.

It is an arithmetic number, because the mean of its divisors is an integer number (305670684).

Almost surely, 2^1222258799 is an apocalyptic number.

1222258799 is a deficient number, since it is larger than the sum of its proper divisors (423937).

1222258799 is an equidigital number, since it uses as much as digits as its factorization.

1222258799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423936.

The product of its digits is 362880, while the sum is 47.

The square root of 1222258799 is about 34960.8180539300. The cubic root of 1222258799 is about 1069.1887754623.

The spelling of 1222258799 in words is "one billion, two hundred twenty-two million, two hundred fifty-eight thousand, seven hundred ninety-nine".