110111221 has 8 divisors (see below), whose sum is σ = 120333024. Its totient is φ = 99924720.

The previous prime is 110111219. The next prime is 110111237. The reversal of 110111221 is 122111011.

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 110111221 - 2¹ = 110111219 is a prime.

It is a super-2 number, since 2×110111221² = 24248961980221682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110111198 and 110111207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2070 + ... + 14983.

It is an arithmetic number, because the mean of its divisors is an integer number (15041628).

Almost surely, 2^110111221 is an apocalyptic number.

110111221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110111221 is a deficient number, since it is larger than the sum of its proper divisors (10221803).

110111221 is a wasteful number, since it uses less digits than its factorization.

110111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17651.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 110111221 is about 10493.3893952336. The cubic root of 110111221 is about 479.3034181310.

Adding to 110111221 its reverse (122111011), we get a palindrome (232222232).

It can be divided in two parts, 11011 and 1221, that multiplied together give a palindrome (13444431).

The spelling of 110111221 in words is "one hundred ten million, one hundred eleven thousand, two hundred twenty-one".