111400221 has 8 divisors (see below), whose sum is σ = 148598944. Its totient is φ = 74234160.

The previous prime is 111400217. The next prime is 111400243. The reversal of 111400221 is 122004111.

It is a happy number.

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

It is not a de Polignac number, because 111400221 - 2² = 111400217 is a prime.

It is a super-3 number, since 3×111400221³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111400197 and 111400206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111400271) 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, 1395 + ... + 14991.

It is an arithmetic number, because the mean of its divisors is an integer number (18574868).

Almost surely, 2^111400221 is an apocalyptic number.

It is an amenable number.

111400221 is a deficient number, since it is larger than the sum of its proper divisors (37198723).

111400221 is a wasteful number, since it uses less digits than its factorization.

111400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16331.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 111400221 is about 10554.6303109109. The cubic root of 111400221 is about 481.1664642548.

Adding to 111400221 its reverse (122004111), we get a palindrome (233404332).

The spelling of 111400221 in words is "one hundred eleven million, four hundred thousand, two hundred twenty-one".