1222000321 has 4 divisors (see below), whose sum is σ = 1225142100. Its totient is φ = 1218858544.

The previous prime is 1222000319. The next prime is 1222000331. The reversal of 1222000321 is 1230002221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 325297296 + 896703025 = 18036^2 + 29945^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222000321 - 2¹ = 1222000319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222000331) 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, 1570306 + ... + 1571083.

It is an arithmetic number, because the mean of its divisors is an integer number (306285525).

Almost surely, 2^1222000321 is an apocalyptic number.

It is an amenable number.

1222000321 is a deficient number, since it is larger than the sum of its proper divisors (3141779).

1222000321 is an equidigital number, since it uses as much as digits as its factorization.

1222000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141778.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1222000321 is about 34957.1211772365. The cubic root of 1222000321 is about 1069.1134010107.

Adding to 1222000321 its reverse (1230002221), we get a palindrome (2452002542).

The spelling of 1222000321 in words is "one billion, two hundred twenty-two million, three hundred twenty-one", and thus it is an aban number.