111214681 has 6 divisors (see below), whose sum is σ = 115182782. Its totient is φ = 107378880.

The previous prime is 111214661. The next prime is 111214687. The reversal of 111214681 is 186412111.

It can be written as a sum of positive squares in 3 ways, for example, as 20793600 + 90421081 = 4560^2 + 9509^2 .

It is not a de Polignac number, because 111214681 - 2¹³ = 111206489 is a prime.

It is a super-2 number, since 2×111214681² = 24737410539863522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111214687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65280 + ... + 66961.

Almost surely, 2^111214681 is an apocalyptic number.

It is an amenable number.

111214681 is a deficient number, since it is larger than the sum of its proper divisors (3968101).

111214681 is an equidigital number, since it uses as much as digits as its factorization.

111214681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132299 (or 132270 counting only the distinct ones).

The product of its digits is 384, while the sum is 25.

The square root of 111214681 is about 10545.8371407869. The cubic root of 111214681 is about 480.8991840091.

Adding to 111214681 its reverse (186412111), we get a palindrome (297626792).

The spelling of 111214681 in words is "one hundred eleven million, two hundred fourteen thousand, six hundred eighty-one".