11112231 has 16 divisors (see below), whose sum is σ = 16016000. Its totient is φ = 6812640.

The previous prime is 11112217. The next prime is 11112239. The reversal of 11112231 is 13221111.

It is not a de Polignac number, because 11112231 - 2¹³ = 11104039 is a prime.

It is a super-2 number, since 2×11112231² = 246963355594722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19176 + ... + 19746.

It is an arithmetic number, because the mean of its divisors is an integer number (1001000).

Almost surely, 2^11112231 is an apocalyptic number.

11112231 is a deficient number, since it is larger than the sum of its proper divisors (4903769).

11112231 is a wasteful number, since it uses less digits than its factorization.

11112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086.

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

The square root of 11112231 is about 3333.5013124341. The cubic root of 11112231 is about 223.1518133474.

Adding to 11112231 its reverse (13221111), we get a palindrome (24333342).

The spelling of 11112231 in words is "eleven million, one hundred twelve thousand, two hundred thirty-one".