111320221 has 8 divisors (see below), whose sum is σ = 118497600. Its totient is φ = 104274720.

The previous prime is 111320203. The next prime is 111320239. The reversal of 111320221 is 122023111.

It is an interprime number because it is at equal distance from previous prime (111320203) and next prime (111320239).

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 111320221 - 2⁵ = 111320189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111320291) 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, 31225 + ... + 34606.

It is an arithmetic number, because the mean of its divisors is an integer number (14812200).

Almost surely, 2^111320221 is an apocalyptic number.

It is an amenable number.

111320221 is a deficient number, since it is larger than the sum of its proper divisors (7177379).

111320221 is an equidigital number, since it uses as much as digits as its factorization.

111320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65939.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 111320221 is about 10550.8398243931. The cubic root of 111320221 is about 481.0512564186.

Adding to 111320221 its reverse (122023111), we get a palindrome (233343332).

The spelling of 111320221 in words is "one hundred eleven million, three hundred twenty thousand, two hundred twenty-one".