1022222321 has 4 divisors (see below), whose sum is σ = 1022686452. Its totient is φ = 1021758192.

The previous prime is 1022222251. The next prime is 1022222413. The reversal of 1022222321 is 1232222201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1232222201 = 7 ⋅176031743.

It can be written as a sum of positive squares in 2 ways, for example, as 600495025 + 421727296 = 24505^2 + 20536^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022222321 - 2²⁶ = 955113457 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 1022222321.

It is not an unprimeable number, because it can be changed into a prime (1022222221) 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, 228746 + ... + 233171.

It is an arithmetic number, because the mean of its divisors is an integer number (255671613).

Almost surely, 2^1022222321 is an apocalyptic number.

It is an amenable number.

1022222321 is a deficient number, since it is larger than the sum of its proper divisors (464131).

1022222321 is an equidigital number, since it uses as much as digits as its factorization.

1022222321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464130.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1022222321 is about 31972.2117001624. The cubic root of 1022222321 is about 1007.3532376986.

Adding to 1022222321 its reverse (1232222201), we get a palindrome (2254444522).

The spelling of 1022222321 in words is "one billion, twenty-two million, two hundred twenty-two thousand, three hundred twenty-one".