222122211 has 8 divisors (see below), whose sum is σ = 304167504. Its totient is φ = 144079200.

The previous prime is 222122209. The next prime is 222122231. The reversal of 222122211 is 112221222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222122211 - 2¹ = 222122209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222122231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000440 + ... + 1000661.

It is an arithmetic number, because the mean of its divisors is an integer number (38020938).

Almost surely, 2^222122211 is an apocalyptic number.

222122211 is a deficient number, since it is larger than the sum of its proper divisors (82045293).

222122211 is a wasteful number, since it uses less digits than its factorization.

222122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001141.

The product of its digits is 64, while the sum is 15.

The square root of 222122211 is about 14903.7649941215. The cubic root of 222122211 is about 605.6159844168.

Adding to 222122211 its reverse (112221222), we get a palindrome (334343433).

It can be divided in two parts, 2221222 and 11, that multiplied together give a palindrome (24433442).

The spelling of 222122211 in words is "two hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".