12220210221 has 16 divisors (see below), whose sum is σ = 17200344000. Its totient is φ = 7695900288.

The previous prime is 12220210207. The next prime is 12220210229. The reversal of 12220210221 is 12201202221.

It is not a de Polignac number, because 12220210221 - 2¹⁴ = 12220193837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12220210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220210229) 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, 287256 + ... + 327041.

It is an arithmetic number, because the mean of its divisors is an integer number (1075021500).

Almost surely, 2^12220210221 is an apocalyptic number.

It is an amenable number.

12220210221 is a deficient number, since it is larger than the sum of its proper divisors (4980133779).

12220210221 is a wasteful number, since it uses less digits than its factorization.

12220210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614668.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12220210221 its reverse (12201202221), we get a palindrome (24421412442).

The spelling of 12220210221 in words is "twelve billion, two hundred twenty million, two hundred ten thousand, two hundred twenty-one".