222212211 has 32 divisors (see below), whose sum is σ = 324576000. Its totient is φ = 134414208.

The previous prime is 222212209. The next prime is 222212233. The reversal of 222212211 is 112212222.

It is not a de Polignac number, because 222212211 - 2¹ = 222212209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222212611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 970245 + ... + 970473.

It is an arithmetic number, because the mean of its divisors is an integer number (10143000).

Almost surely, 2^222212211 is an apocalyptic number.

222212211 is a deficient number, since it is larger than the sum of its proper divisors (102363789).

222212211 is a wasteful number, since it uses less digits than its factorization.

222212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563.

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

The square root of 222212211 is about 14906.7840596153. The cubic root of 222212211 is about 605.6977683418.

Adding to 222212211 its reverse (112212222), we get a palindrome (334424433).

The spelling of 222212211 in words is "two hundred twenty-two million, two hundred twelve thousand, two hundred eleven".