210111222 has 16 divisors (see below), whose sum is σ = 420387120. Its totient is φ = 70009632.

The previous prime is 210111203. The next prime is 210111227. The reversal of 210111222 is 222111012.

210111222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×210111222² = 88293451220666568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210111198 and 210111207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15168 + ... + 25500.

It is an arithmetic number, because the mean of its divisors is an integer number (26274195).

Almost surely, 2^210111222 is an apocalyptic number.

210111222 is an abundant number, since it is smaller than the sum of its proper divisors (210275898).

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

210111222 is a wasteful number, since it uses less digits than its factorization.

210111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13727.

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

The square root of 210111222 is about 14495.2137617905. The cubic root of 210111222 is about 594.4971124525.

Adding to 210111222 its reverse (222111012), we get a palindrome (432222234).

The spelling of 210111222 in words is "two hundred ten million, one hundred eleven thousand, two hundred twenty-two".