2221313330231 has 2 divisors, whose sum is σ = 2221313330232. Its totient is φ = 2221313330230.

The previous prime is 2221313330209. The next prime is 2221313330237. The reversal of 2221313330231 is 1320333131222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221313330231 is a prime.

It is a super-2 number, since 2×2221313330231² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2221313330231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221313330237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110656665115 + 1110656665116.

It is an arithmetic number, because the mean of its divisors is an integer number (1110656665116).

Almost surely, 2^{2221313330231} is an apocalyptic number.

2221313330231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221313330231 is an equidigital number, since it uses as much as digits as its factorization.

2221313330231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 2221313330231 its reverse (1320333131222), we get a palindrome (3541646461453).

The spelling of 2221313330231 in words is "two trillion, two hundred twenty-one billion, three hundred thirteen million, three hundred thirty thousand, two hundred thirty-one".