22213210221 has 24 divisors (see below), whose sum is σ = 32963948160. Its totient is φ = 14403751776.

The previous prime is 22213210219. The next prime is 22213210249. The reversal of 22213210221 is 12201231222.

22213210221 is a `hidden beast` number, since 22 + 213 + 210 + 221 = 666.

It is not a de Polignac number, because 22213210221 - 2¹ = 22213210219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22213210194 and 22213210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213210211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1175776 + ... + 1194518.

It is an arithmetic number, because the mean of its divisors is an integer number (1373497840).

Almost surely, 2^22213210221 is an apocalyptic number.

It is an amenable number.

22213210221 is a deficient number, since it is larger than the sum of its proper divisors (10750737939).

22213210221 is a wasteful number, since it uses less digits than its factorization.

22213210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22345 (or 22342 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22213210221 its reverse (12201231222), we get a palindrome (34414441443).

The spelling of 22213210221 in words is "twenty-two billion, two hundred thirteen million, two hundred ten thousand, two hundred twenty-one".