222111210 has 16 divisors (see below), whose sum is σ = 533066976. Its totient is φ = 59229648.

The previous prime is 222111209. The next prime is 222111233. The reversal of 222111210 is 12111222.

222111210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3701824 + ... + 3701883.

It is an arithmetic number, because the mean of its divisors is an integer number (33316686).

Almost surely, 2^222111210 is an apocalyptic number.

222111210 is an abundant number, since it is smaller than the sum of its proper divisors (310955766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222111210 is a wasteful number, since it uses less digits than its factorization.

222111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7403717.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 222111210 is about 14903.3959217354. The cubic root of 222111210 is about 605.6059861799.

Adding to 222111210 its sum of digits (12), we get a palindrome (222111222).

Adding to 222111210 its reverse (12111222), we get a palindrome (234222432).

It can be divided in two parts, 2221 and 11210, that added together give a palindrome (13431).

The spelling of 222111210 in words is "two hundred twenty-two million, one hundred eleven thousand, two hundred ten".