222110001 has 24 divisors (see below), whose sum is σ = 333706880. Its totient is φ = 142230816.

The previous prime is 222109991. The next prime is 222110027. The reversal of 222110001 is 100011222.

It is not a de Polignac number, because 222110001 - 2⁵ = 222109969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222110041) 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 23 ways as a sum of consecutive naturals, for example, 22086 + ... + 30528.

Almost surely, 2^222110001 is an apocalyptic number.

It is an amenable number.

222110001 is a deficient number, since it is larger than the sum of its proper divisors (111596879).

222110001 is a wasteful number, since it uses less digits than its factorization.

222110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8565 (or 8562 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 222110001 is about 14903.3553604549. The cubic root of 222110001 is about 605.6048873626.

Adding to 222110001 its reverse (100011222), we get a palindrome (322121223).

The spelling of 222110001 in words is "two hundred twenty-two million, one hundred ten thousand, one".