1222220320231 has 2 divisors, whose sum is σ = 1222220320232. Its totient is φ = 1222220320230.

The previous prime is 1222220320219. The next prime is 1222220320259. The reversal of 1222220320231 is 1320230222221.

It is a weak prime.

It is an emirp because it is prime and its reverse (1320230222221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222220320231 is a prime.

It is a super-2 number, since 2×1222220320231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222220320261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611110160115 + 611110160116.

It is an arithmetic number, because the mean of its divisors is an integer number (611110160116).

Almost surely, 2^{1222220320231} is an apocalyptic number.

1222220320231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222220320231 is an equidigital number, since it uses as much as digits as its factorization.

1222220320231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1222220320231 its reverse (1320230222221), we get a palindrome (2542450542452).

It can be divided in two parts, 1222220 and 320231, that added together give a palindrome (1542451).

The spelling of 1222220320231 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, three hundred twenty thousand, two hundred thirty-one".