111111212330213 has 2 divisors, whose sum is σ = 111111212330214. Its totient is φ = 111111212330212.

The previous prime is 111111212330191. The next prime is 111111212330263. The reversal of 111111212330213 is 312033212111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106816710437089 + 4294501893124 = 10335217^2 + 2072318^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111212330213 - 2²² = 111111208135909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111111212330263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555606165106 + 55555606165107.

It is an arithmetic number, because the mean of its divisors is an integer number (55555606165107).

Almost surely, 2^{111111212330213} is an apocalyptic number.

It is an amenable number.

111111212330213 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111212330213 is an equidigital number, since it uses as much as digits as its factorization.

111111212330213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 111111212330213 its reverse (312033212111111), we get a palindrome (423144424441324).

The spelling of 111111212330213 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred twelve million, three hundred thirty thousand, two hundred thirteen".