111222681 has 8 divisors (see below), whose sum is σ = 148633440. Its totient is φ = 73980192.

The previous prime is 111222659. The next prime is 111222701. The reversal of 111222681 is 186222111.

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

It is not a de Polignac number, because 111222681 - 2⁵ = 111222649 is a prime.

It is a super-2 number, since 2×111222681² = 24740969537655522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111221681) 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, 40516 + ... + 43173.

It is an arithmetic number, because the mean of its divisors is an integer number (18579180).

Almost surely, 2^111222681 is an apocalyptic number.

It is an amenable number.

111222681 is a deficient number, since it is larger than the sum of its proper divisors (37410759).

111222681 is an equidigital number, since it uses as much as digits as its factorization.

111222681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84135.

The product of its digits is 384, while the sum is 24.

The square root of 111222681 is about 10546.2164305499. The cubic root of 111222681 is about 480.9107145648.

Adding to 111222681 its reverse (186222111), we get a palindrome (297444792).

The spelling of 111222681 in words is "one hundred eleven million, two hundred twenty-two thousand, six hundred eighty-one".