222145210 has 16 divisors (see below), whose sum is σ = 456984576. Its totient is φ = 76164048.

The previous prime is 222145199. The next prime is 222145211. The reversal of 222145210 is 12541222.

It is not an unprimeable number, because it can be changed into a prime (222145211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586682 + ... + 1586821.

It is an arithmetic number, because the mean of its divisors is an integer number (28561536).

Almost surely, 2^222145210 is an apocalyptic number.

222145210 is an abundant number, since it is smaller than the sum of its proper divisors (234839366).

222145210 is a wasteful number, since it uses less digits than its factorization.

222145210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173517.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 222145210 is about 14904.5365577062. The cubic root of 222145210 is about 605.6368859455.

Adding to 222145210 its reverse (12541222), we get a palindrome (234686432).

The spelling of 222145210 in words is "two hundred twenty-two million, one hundred forty-five thousand, two hundred ten".