1222331785 has 8 divisors (see below), whose sum is σ = 1483279560. Its totient is φ = 966877824.

The previous prime is 1222331779. The next prime is 1222331827. The reversal of 1222331785 is 5871332221.

It can be written as a sum of positive squares in 4 ways, for example, as 62520649 + 1159811136 = 7907^2 + 34056^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1222331785 - 2⁷ = 1222331657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222331785.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1372962 + ... + 1373851.

It is an arithmetic number, because the mean of its divisors is an integer number (185409945).

Almost surely, 2^1222331785 is an apocalyptic number.

It is an amenable number.

1222331785 is a deficient number, since it is larger than the sum of its proper divisors (260947775).

1222331785 is an equidigital number, since it uses as much as digits as its factorization.

1222331785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746907.

The product of its digits is 20160, while the sum is 34.

The square root of 1222331785 is about 34961.8618640369. The cubic root of 1222331785 is about 1069.2100568959.

The spelling of 1222331785 in words is "one billion, two hundred twenty-two million, three hundred thirty-one thousand, seven hundred eighty-five".