210220222 has 4 divisors (see below), whose sum is σ = 315330336. Its totient is φ = 105110110.

The previous prime is 210220193. The next prime is 210220229. The reversal of 210220222 is 222022012.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52555054 + ... + 52555057.

It is an arithmetic number, because the mean of its divisors is an integer number (78832584).

Almost surely, 2^210220222 is an apocalyptic number.

210220222 is a deficient number, since it is larger than the sum of its proper divisors (105110114).

210220222 is a wasteful number, since it uses less digits than its factorization.

210220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105110113.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 210220222 is about 14498.9731360535. The cubic root of 210220222 is about 594.5998976700.

Adding to 210220222 its reverse (222022012), we get a palindrome (432242234).

The spelling of 210220222 in words is "two hundred ten million, two hundred twenty thousand, two hundred twenty-two".