221324112210 has 32 divisors (see below), whose sum is σ = 531193363200. Its totient is φ = 59018041728.

The previous prime is 221324112209. The next prime is 221324112223. The reversal of 221324112210 is 12211423122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197591 + ... + 1369989.

It is an arithmetic number, because the mean of its divisors is an integer number (16599792600).

Almost surely, 2^221324112210 is an apocalyptic number.

221324112210 is an abundant number, since it is smaller than the sum of its proper divisors (309869250990).

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

221324112210 is a wasteful number, since it uses less digits than its factorization.

221324112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215202.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 221324112210 its reverse (12211423122), we get a palindrome (233535535332).

The spelling of 221324112210 in words is "two hundred twenty-one billion, three hundred twenty-four million, one hundred twelve thousand, two hundred ten".