222231211 has 4 divisors (see below), whose sum is σ = 222348112. Its totient is φ = 222114312.

The previous prime is 222231167. The next prime is 222231227. The reversal of 222231211 is 112132222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222231211 - 2²⁵ = 188676779 is a prime.

It is a super-2 number, since 2×222231211² = 98773422285053042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222231311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55551 + ... + 59416.

It is an arithmetic number, because the mean of its divisors is an integer number (55587028).

Almost surely, 2^222231211 is an apocalyptic number.

222231211 is a deficient number, since it is larger than the sum of its proper divisors (116901).

222231211 is a wasteful number, since it uses less digits than its factorization.

222231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116900.

The product of its digits is 96, while the sum is 16.

The square root of 222231211 is about 14907.4213397220. The cubic root of 222231211 is about 605.7150310139.

Adding to 222231211 its reverse (112132222), we get a palindrome (334363433).

It can be divided in two parts, 2222 and 31211, that added together give a palindrome (33433).

The spelling of 222231211 in words is "two hundred twenty-two million, two hundred thirty-one thousand, two hundred eleven".