1222031321 has 8 divisors (see below), whose sum is σ = 1412300160. Its totient is φ = 1035685728.

The previous prime is 1222031311. The next prime is 1222031347. The reversal of 1222031321 is 1231302221.

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

It is not a de Polignac number, because 1222031321 - 2⁶ = 1222031257 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 1222031321.

It is not an unprimeable number, because it can be changed into a prime (1222031311) 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, 980141 + ... + 981386.

It is an arithmetic number, because the mean of its divisors is an integer number (176537520).

Almost surely, 2^1222031321 is an apocalyptic number.

It is an amenable number.

1222031321 is a deficient number, since it is larger than the sum of its proper divisors (190268839).

1222031321 is an equidigital number, since it uses as much as digits as its factorization.

1222031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961623.

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

The square root of 1222031321 is about 34957.5645747812. The cubic root of 1222031321 is about 1069.1224414435.

Adding to 1222031321 its reverse (1231302221), we get a palindrome (2453333542).

The spelling of 1222031321 in words is "one billion, two hundred twenty-two million, thirty-one thousand, three hundred twenty-one".