1322221231 has 2 divisors, whose sum is σ = 1322221232. Its totient is φ = 1322221230.

The previous prime is 1322221213. The next prime is 1322221261. The reversal of 1322221231 is 1321222231.

Together with previous prime (1322221213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1322221231 - 2⁹ = 1322220719 is a prime.

It is a super-2 number, since 2×1322221231² = 3496537967414310722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1322221199 and 1322221208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322221261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661110615 + 661110616.

It is an arithmetic number, because the mean of its divisors is an integer number (661110616).

Almost surely, 2^1322221231 is an apocalyptic number.

1322221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322221231 is an equidigital number, since it uses as much as digits as its factorization.

1322221231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 1322221231 is about 36362.3600856710. The cubic root of 1322221231 is about 1097.5762698331.

Adding to 1322221231 its reverse (1321222231), we get a palindrome (2643443462).

It can be divided in two parts, 13222 and 21231, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 1322221231 in words is "one billion, three hundred twenty-two million, two hundred twenty-one thousand, two hundred thirty-one".