222210321 has 16 divisors (see below), whose sum is σ = 301451136. Its totient is φ = 145570176.

The previous prime is 222210311. The next prime is 222210341. The reversal of 222210321 is 123012222.

It is a happy number.

222210321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222210321 - 2¹⁰ = 222209297 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 222210321.

It is not an unprimeable number, because it can be changed into a prime (222210311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62436 + ... + 65898.

It is an arithmetic number, because the mean of its divisors is an integer number (18840696).

Almost surely, 2^222210321 is an apocalyptic number.

It is an amenable number.

222210321 is a deficient number, since it is larger than the sum of its proper divisors (79240815).

222210321 is a wasteful number, since it uses less digits than its factorization.

222210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 222210321 is about 14906.7206655253. The cubic root of 222210321 is about 605.6960511064.

Adding to 222210321 its reverse (123012222), we get a palindrome (345222543).

The spelling of 222210321 in words is "two hundred twenty-two million, two hundred ten thousand, three hundred twenty-one".