2221188 has 12 divisors (see below), whose sum is σ = 5182800. Its totient is φ = 740392.

The previous prime is 2221187. The next prime is 2221217. The reversal of 2221188 is 8811222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2221188² = 9867352262688, which contains 22 as substring.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2221183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92538 + ... + 92561.

It is an arithmetic number, because the mean of its divisors is an integer number (431900).

2^2221188 is an apocalyptic number.

It is an amenable number.

2221188 is an abundant number, since it is smaller than the sum of its proper divisors (2961612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221188 is a wasteful number, since it uses less digits than its factorization.

2221188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185106 (or 185104 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 2221188 is about 1490.3650559511. The cubic root of 2221188 is about 130.4753406820.

The spelling of 2221188 in words is "two million, two hundred twenty-one thousand, one hundred eighty-eight".