1222320311 has 8 divisors (see below), whose sum is σ = 1243361280. Its totient is φ = 1201418712.

The previous prime is 1222320301. The next prime is 1222320373. The reversal of 1222320311 is 1130232221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222320311 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 1222320311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222320301) 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, 17075 + ... + 52308.

It is an arithmetic number, because the mean of its divisors is an integer number (155420160).

Almost surely, 2^1222320311 is an apocalyptic number.

1222320311 is a deficient number, since it is larger than the sum of its proper divisors (21040969).

1222320311 is an equidigital number, since it uses as much as digits as its factorization.

1222320311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69685.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1222320311 is about 34961.6977705603. The cubic root of 1222320311 is about 1069.2067113355.

Adding to 1222320311 its reverse (1130232221), we get a palindrome (2352552532).

The spelling of 1222320311 in words is "one billion, two hundred twenty-two million, three hundred twenty thousand, three hundred eleven".