2221911 has 10 divisors (see below), whose sum is σ = 3319272. Its totient is φ = 1481220.

The previous prime is 2221909. The next prime is 2221931. The reversal of 2221911 is 1191222.

It is not a de Polignac number, because 2221911 - 2¹ = 2221909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221931) 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 9 ways as a sum of consecutive naturals, for example, 13635 + ... + 13796.

2^2221911 is an apocalyptic number.

2221911 is a deficient number, since it is larger than the sum of its proper divisors (1097361).

2221911 is an equidigital number, since it uses as much as digits as its factorization.

2221911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27443 (or 27434 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 2221911 is about 1490.6075942380. The cubic root of 2221911 is about 130.4894957855.

The spelling of 2221911 in words is "two million, two hundred twenty-one thousand, nine hundred eleven".