111244221 has 24 divisors (see below), whose sum is σ = 184523040. Its totient is φ = 63871200.

The previous prime is 111244181. The next prime is 111244241. The reversal of 111244221 is 122442111.

It is not a de Polignac number, because 111244221 - 2¹⁵ = 111211453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111244194 and 111244203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111244241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27690 + ... + 31451.

It is an arithmetic number, because the mean of its divisors is an integer number (7688460).

Almost surely, 2^111244221 is an apocalyptic number.

111244221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111244221 is a deficient number, since it is larger than the sum of its proper divisors (73278819).

111244221 is a wasteful number, since it uses less digits than its factorization.

111244221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59177 (or 59174 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 111244221 is about 10547.2376004336. The cubic root of 111244221 is about 480.9417578378.

Adding to 111244221 its reverse (122442111), we get a palindrome (233686332).

The spelling of 111244221 in words is "one hundred eleven million, two hundred forty-four thousand, two hundred twenty-one".