1223331322231 has 2 divisors, whose sum is σ = 1223331322232. Its totient is φ = 1223331322230.

The previous prime is 1223331322229. The next prime is 1223331322237. The reversal of 1223331322231 is 1322231333221.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1322231333221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1223331322231 - 2¹ = 1223331322229 is a prime.

It is a super-2 number, since 2×1223331322231² (a number of 25 digits) contains 22 as substring.

Together with 1223331322229, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1223331322231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223331322237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611665661115 + 611665661116.

It is an arithmetic number, because the mean of its divisors is an integer number (611665661116).

Almost surely, 2^{1223331322231} is an apocalyptic number.

1223331322231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223331322231 is an equidigital number, since it uses as much as digits as its factorization.

1223331322231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 28.

Adding to 1223331322231 its reverse (1322231333221), we get a palindrome (2545562655452).

The spelling of 1223331322231 in words is "one trillion, two hundred twenty-three billion, three hundred thirty-one million, three hundred twenty-two thousand, two hundred thirty-one".