222240211 has 4 divisors (see below), whose sum is σ = 227408632. Its totient is φ = 217071792.

The previous prime is 222240199. The next prime is 222240217. The reversal of 222240211 is 112042222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112042222 = 2 ⋅56021111.

It is a cyclic number.

It is not a de Polignac number, because 222240211 - 2²⁵ = 188685779 is a prime.

It is a super-2 number, since 2×222240211² = 98781422770649042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222240217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2584146 + ... + 2584231.

It is an arithmetic number, because the mean of its divisors is an integer number (56852158).

Almost surely, 2^222240211 is an apocalyptic number.

222240211 is a deficient number, since it is larger than the sum of its proper divisors (5168421).

222240211 is an equidigital number, since it uses as much as digits as its factorization.

222240211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168420.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 222240211 is about 14907.7231997378. The cubic root of 222240211 is about 605.7232077257.

Adding to 222240211 its reverse (112042222), we get a palindrome (334282433).

The spelling of 222240211 in words is "two hundred twenty-two million, two hundred forty thousand, two hundred eleven".