222111001 has 16 divisors (see below), whose sum is σ = 277447680. Its totient is φ = 173399040.

The previous prime is 222110989. The next prime is 222111011. The reversal of 222111001 is 100111222.

222111001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222111001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222111011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26416 + ... + 33793.

It is an arithmetic number, because the mean of its divisors is an integer number (17340480).

Almost surely, 2^222111001 is an apocalyptic number.

It is an amenable number.

222111001 is a deficient number, since it is larger than the sum of its proper divisors (55336679).

222111001 is a wasteful number, since it uses less digits than its factorization.

222111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60264.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 222111001 is about 14903.3889099090. The cubic root of 222111001 is about 605.6057962275.

Adding to 222111001 its reverse (100111222), we get a palindrome (322222223).

The spelling of 222111001 in words is "two hundred twenty-two million, one hundred eleven thousand, one".