111066221 has 8 divisors (see below), whose sum is σ = 127069824. Its totient is φ = 95096880.

The previous prime is 111066187. The next prime is 111066247. The reversal of 111066221 is 122660111.

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 111066221 - 2⁶ = 111066157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111066193 and 111066202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111066251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190 + ... + 14951.

It is an arithmetic number, because the mean of its divisors is an integer number (15883728).

Almost surely, 2^111066221 is an apocalyptic number.

It is an amenable number.

111066221 is a deficient number, since it is larger than the sum of its proper divisors (16003603).

111066221 is an equidigital number, since it uses as much as digits as its factorization.

111066221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17131.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 111066221 is about 10538.7959938505. The cubic root of 111066221 is about 480.6851053048.

The spelling of 111066221 in words is "one hundred eleven million, sixty-six thousand, two hundred twenty-one".