221313423111311 has 2 divisors, whose sum is σ = 221313423111312. Its totient is φ = 221313423111310.

The previous prime is 221313423111307. The next prime is 221313423111323. The reversal of 221313423111311 is 113111324313122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221313423111311 - 2² = 221313423111307 is a prime.

It is a super-2 number, since 2×221313423111311² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221313423111371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110656711555655 + 110656711555656.

It is an arithmetic number, because the mean of its divisors is an integer number (110656711555656).

Almost surely, 2^{221313423111311} is an apocalyptic number.

221313423111311 is a deficient number, since it is larger than the sum of its proper divisors (1).

221313423111311 is an equidigital number, since it uses as much as digits as its factorization.

221313423111311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

Adding to 221313423111311 its reverse (113111324313122), we get a palindrome (334424747424433).

The spelling of 221313423111311 in words is "two hundred twenty-one trillion, three hundred thirteen billion, four hundred twenty-three million, one hundred eleven thousand, three hundred eleven".