2221887 has 12 divisors (see below), whose sum is σ = 3050376. Its totient is φ = 1438560.

The previous prime is 2221871. The next prime is 2221889. The reversal of 2221887 is 7881222.

It is a happy number.

It is not a de Polignac number, because 2221887 - 2⁴ = 2221871 is a prime.

It is a super-3 number, since 3×2221887³ = 32906914181522133309, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3837 + ... + 4377.

It is an arithmetic number, because the mean of its divisors is an integer number (254198).

2^2221887 is an apocalyptic number.

2221887 is a deficient number, since it is larger than the sum of its proper divisors (828489).

2221887 is an equidigital number, since it uses as much as digits as its factorization.

2221887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618 (or 581 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 2221887 is about 1490.5995438078. The cubic root of 2221887 is about 130.4890259558.

The spelling of 2221887 in words is "two million, two hundred twenty-one thousand, eight hundred eighty-seven".