111222431 has 8 divisors (see below), whose sum is σ = 112613760. Its totient is φ = 109836288.

The previous prime is 111222421. The next prime is 111222439. The reversal of 111222431 is 134222111.

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

It is a cyclic number.

It is not a de Polignac number, because 111222431 - 2¹⁸ = 110960287 is a prime.

It is a super-2 number, since 2×111222431² = 24740858315099522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222439) 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, 57935 + ... + 59823.

It is an arithmetic number, because the mean of its divisors is an integer number (14076720).

Almost surely, 2^111222431 is an apocalyptic number.

111222431 is a deficient number, since it is larger than the sum of its proper divisors (1391329).

111222431 is an equidigital number, since it uses as much as digits as its factorization.

111222431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593.

The product of its digits is 96, while the sum is 17.

The square root of 111222431 is about 10546.2045779513. The cubic root of 111222431 is about 480.9103542433.

Adding to 111222431 its reverse (134222111), we get a palindrome (245444542).

The spelling of 111222431 in words is "one hundred eleven million, two hundred twenty-two thousand, four hundred thirty-one".