22002201221 has 32 divisors (see below), whose sum is σ = 29982425088. Its totient is φ = 15589506240.

The previous prime is 22002201181. The next prime is 22002201223. The reversal of 22002201221 is 12210220022.

It is not a de Polignac number, because 22002201221 - 2¹⁰ = 22002200197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22002201196 and 22002201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002201223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96965 + ... + 231098.

It is an arithmetic number, because the mean of its divisors is an integer number (936950784).

Almost surely, 2^22002201221 is an apocalyptic number.

It is an amenable number.

22002201221 is a deficient number, since it is larger than the sum of its proper divisors (7980223867).

22002201221 is a wasteful number, since it uses less digits than its factorization.

22002201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328161.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22002201221 its reverse (12210220022), we get a palindrome (34212421243).

The spelling of 22002201221 in words is "twenty-two billion, two million, two hundred one thousand, two hundred twenty-one".