1222022231 has 4 divisors (see below), whose sum is σ = 1248022752. Its totient is φ = 1196021712.

The previous prime is 1222022209. The next prime is 1222022233. The reversal of 1222022231 is 1322202221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222022231 - 2¹⁸ = 1221760087 is a prime.

It is a super-2 number, since 2×1222022231² = 2986676666116434722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222022233) 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, 13000190 + ... + 13000283.

It is an arithmetic number, because the mean of its divisors is an integer number (312005688).

Almost surely, 2^1222022231 is an apocalyptic number.

1222022231 is a deficient number, since it is larger than the sum of its proper divisors (26000521).

1222022231 is an equidigital number, since it uses as much as digits as its factorization.

1222022231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26000520.

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

The square root of 1222022231 is about 34957.4345597614. The cubic root of 1222022231 is about 1069.1197905711.

Adding to 1222022231 its reverse (1322202221), we get a palindrome (2544224452).

The spelling of 1222022231 in words is "one billion, two hundred twenty-two million, twenty-two thousand, two hundred thirty-one".