111111100202213 has 2 divisors, whose sum is σ = 111111100202214. Its totient is φ = 111111100202212.

The previous prime is 111111100202209. The next prime is 111111100202287. The reversal of 111111100202213 is 312202001111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83726580949729 + 27384519252484 = 9150223^2 + 5233022^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111100202213 - 2² = 111111100202209 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111111100202191 and 111111100202200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111111100252213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555550101106 + 55555550101107.

It is an arithmetic number, because the mean of its divisors is an integer number (55555550101107).

Almost surely, 2^{111111100202213} is an apocalyptic number.

It is an amenable number.

111111100202213 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111100202213 is an equidigital number, since it uses as much as digits as its factorization.

111111100202213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 111111100202213 its reverse (312202001111111), we get a palindrome (423313101313324).

The spelling of 111111100202213 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred million, two hundred two thousand, two hundred thirteen".