2211231 has 16 divisors (see below), whose sum is σ = 3305088. Its totient is φ = 1303200.

The previous prime is 2211227. The next prime is 2211233. The reversal of 2211231 is 1321122.

It is not a de Polignac number, because 2211231 - 2² = 2211227 is a prime.

It is a super-2 number, since 2×2211231² = 9779085070722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211233) 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, 316 + ... + 2126.

It is an arithmetic number, because the mean of its divisors is an integer number (206568).

2^2211231 is an apocalyptic number.

2211231 is a deficient number, since it is larger than the sum of its proper divisors (1093857).

2211231 is a wasteful number, since it uses less digits than its factorization.

2211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862.

The product of its digits is 24, while the sum is 12.

The square root of 2211231 is about 1487.0208471975. The cubic root of 2211231 is about 130.2800864525.

Adding to 2211231 its reverse (1321122), we get a palindrome (3532353).

It can be divided in two parts, 2211 and 231, that added together give a palindrome (2442).

The spelling of 2211231 in words is "two million, two hundred eleven thousand, two hundred thirty-one".