2221385 has 16 divisors (see below), whose sum is σ = 2856000. Its totient is φ = 1653696.

The previous prime is 2221381. The next prime is 2221391. The reversal of 2221385 is 5831222.

It is a cyclic number.

It is not a de Polignac number, because 2221385 - 2² = 2221381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221385.

It is not an unprimeable number, because it can be changed into a prime (2221381) 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, 6191 + ... + 6539.

It is an arithmetic number, because the mean of its divisors is an integer number (178500).

2^2221385 is an apocalyptic number.

It is an amenable number.

2221385 is a deficient number, since it is larger than the sum of its proper divisors (634615).

2221385 is a wasteful number, since it uses less digits than its factorization.

2221385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its digits is 960, while the sum is 23.

The square root of 2221385 is about 1490.4311456756. The cubic root of 2221385 is about 130.4791979095.

The spelling of 2221385 in words is "two million, two hundred twenty-one thousand, three hundred eighty-five".