111111213 has 8 divisors (see below), whose sum is σ = 148218208. Its totient is φ = 74039184.

The previous prime is 111111199. The next prime is 111111233. The reversal of 111111213 is 312111111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111111213 - 2⁴ = 111111197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106 + ... + 14907.

It is an arithmetic number, because the mean of its divisors is an integer number (18527276).

Almost surely, 2^111111213 is an apocalyptic number.

It is an amenable number.

111111213 is a deficient number, since it is larger than the sum of its proper divisors (37106995).

111111213 is a wasteful number, since it uses less digits than its factorization.

111111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17483.

The product of its digits is 6, while the sum is 12.

The square root of 111111213 is about 10540.9303669078. The cubic root of 111111213 is about 480.7500037183.

Adding to 111111213 its reverse (312111111), we get a palindrome (423222324).

The spelling of 111111213 in words is "one hundred eleven million, one hundred eleven thousand, two hundred thirteen".