2221187 has 2 divisors, whose sum is σ = 2221188. Its totient is φ = 2221186.

The previous prime is 2221183. The next prime is 2221217. The reversal of 2221187 is 7811222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221187 - 2² = 2221183 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2221183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110593 + 1110594.

It is an arithmetic number, because the mean of its divisors is an integer number (1110594).

2^2221187 is an apocalyptic number.

2221187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221187 is an equidigital number, since it uses as much as digits as its factorization.

2221187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448, while the sum is 23.

The square root of 2221187 is about 1490.3647204627. The cubic root of 2221187 is about 130.4753211016.

The spelling of 2221187 in words is "two million, two hundred twenty-one thousand, one hundred eighty-seven".