11117213 has 2 divisors, whose sum is σ = 11117214. Its totient is φ = 11117212.

The previous prime is 11117123. The next prime is 11117321. The reversal of 11117213 is 31271111.

11117213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (11117321) it forms an Ormiston pair, because they use the same digits, order apart.

Together with previous prime (11117123) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8082649 + 3034564 = 2843^2 + 1742^2 .

It is a cyclic number.

It is not a de Polignac number, because 11117213 - 2¹⁴ = 11100829 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11117191 and 11117200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11110213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5558606 + 5558607.

It is an arithmetic number, because the mean of its divisors is an integer number (5558607).

Almost surely, 2^11117213 is an apocalyptic number.

It is an amenable number.

11117213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11117213 is an equidigital number, since it uses as much as digits as its factorization.

11117213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42, while the sum is 17.

The square root of 11117213 is about 3334.2484910396. The cubic root of 11117213 is about 223.1851572736.

Adding to 11117213 its reverse (31271111), we get a palindrome (42388324).

The spelling of 11117213 in words is "eleven million, one hundred seventeen thousand, two hundred thirteen".