111213213 has 16 divisors (see below), whose sum is σ = 161126400. Its totient is φ = 67973040.

The previous prime is 111213209. The next prime is 111213217. The reversal of 111213213 is 312312111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111213209) and next prime (111213217).

It is not a de Polignac number, because 111213213 - 2² = 111213209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111213192 and 111213201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111213217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29703 + ... + 33236.

It is an arithmetic number, because the mean of its divisors is an integer number (10070400).

Almost surely, 2^111213213 is an apocalyptic number.

It is an amenable number.

111213213 is a deficient number, since it is larger than the sum of its proper divisors (49913187).

111213213 is a wasteful number, since it uses less digits than its factorization.

111213213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62992.

The product of its digits is 36, while the sum is 15.

The square root of 111213213 is about 10545.7675396341. The cubic root of 111213213 is about 480.8970680921.

Adding to 111213213 its reverse (312312111), we get a palindrome (423525324).

The spelling of 111213213 in words is "one hundred eleven million, two hundred thirteen thousand, two hundred thirteen".