22221222010221 has 32 divisors (see below), whose sum is σ = 31924717719552. Its totient is φ = 13667176635840.

The previous prime is 22221222010213. The next prime is 22221222010243. The reversal of 22221222010221 is 12201022212222.

It is not a de Polignac number, because 22221222010221 - 2³ = 22221222010213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221222010291) 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, 584888536 + ... + 584926526.

It is an arithmetic number, because the mean of its divisors is an integer number (997647428736).

Almost surely, 2^{22221222010221} is an apocalyptic number.

It is an amenable number.

22221222010221 is a deficient number, since it is larger than the sum of its proper divisors (9703495709331).

22221222010221 is a wasteful number, since it uses less digits than its factorization.

22221222010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45753.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22221222010221 its reverse (12201022212222), we get a palindrome (34422244222443).

The spelling of 22221222010221 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, ten thousand, two hundred twenty-one".