210212222 has 16 divisors (see below), whose sum is σ = 349624944. Its totient is φ = 93984000.

The previous prime is 210212201. The next prime is 210212227. The reversal of 210212222 is 222212012.

It is a junction number, because it is equal to n+sod(n) for n = 210212197 and 210212206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210212227) 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, 76979 + ... + 79662.

It is an arithmetic number, because the mean of its divisors is an integer number (21851559).

Almost surely, 2^210212222 is an apocalyptic number.

210212222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210212222 is a deficient number, since it is larger than the sum of its proper divisors (139412722).

210212222 is a wasteful number, since it uses less digits than its factorization.

210212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156715.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 210212222 is about 14498.6972518223. The cubic root of 210212222 is about 594.5923550092.

Adding to 210212222 its reverse (222212012), we get a palindrome (432424234).

The spelling of 210212222 in words is "two hundred ten million, two hundred twelve thousand, two hundred twenty-two".