22022212100221 has 16 divisors (see below), whose sum is σ = 22632371238400. Its totient is φ = 21416660759088.

The previous prime is 22022212100183. The next prime is 22022212100233. The reversal of 22022212100221 is 12200121222022.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22022212100221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022212100521) 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, 11224090 + ... + 13039348.

It is an arithmetic number, because the mean of its divisors is an integer number (1414523202400).

Almost surely, 2^{22022212100221} is an apocalyptic number.

It is an amenable number.

22022212100221 is a deficient number, since it is larger than the sum of its proper divisors (610159138179).

22022212100221 is a wasteful number, since it uses less digits than its factorization.

22022212100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816528.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22022212100221 its reverse (12200121222022), we get a palindrome (34222333322243).

The spelling of 22022212100221 in words is "twenty-two trillion, twenty-two billion, two hundred twelve million, one hundred thousand, two hundred twenty-one".