221112321312343 has 2 divisors, whose sum is σ = 221112321312344. Its totient is φ = 221112321312342.

The previous prime is 221112321312287. The next prime is 221112321312361. The reversal of 221112321312343 is 343213123211122.

221112321312343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221112321312343 - 2²¹ = 221112319215191 is a prime.

It is a super-2 number, since 2×221112321312343² (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 (221112921312343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110556160656171 + 110556160656172.

It is an arithmetic number, because the mean of its divisors is an integer number (110556160656172).

Almost surely, 2^{221112321312343} is an apocalyptic number.

221112321312343 is a deficient number, since it is larger than the sum of its proper divisors (1).

221112321312343 is an equidigital number, since it uses as much as digits as its factorization.

221112321312343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

Adding to 221112321312343 its reverse (343213123211122), we get a palindrome (564325444523465).

The spelling of 221112321312343 in words is "two hundred twenty-one trillion, one hundred twelve billion, three hundred twenty-one million, three hundred twelve thousand, three hundred forty-three".