22100322303221 has 4 divisors (see below), whose sum is σ = 23400341262252. Its totient is φ = 20800303344192.

The previous prime is 22100322303193. The next prime is 22100322303233. The reversal of 22100322303221 is 12230322300122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12491029090225 + 9609293212996 = 3534265^2 + 3099886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22100322303221 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 (22100322302221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650009479490 + ... + 650009479523.

It is an arithmetic number, because the mean of its divisors is an integer number (5850085315563).

Almost surely, 2^{22100322303221} is an apocalyptic number.

It is an amenable number.

22100322303221 is a deficient number, since it is larger than the sum of its proper divisors (1300018959031).

22100322303221 is a wasteful number, since it uses less digits than its factorization.

22100322303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300018959030.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 22100322303221 its reverse (12230322300122), we get a palindrome (34330644603343).

The spelling of 22100322303221 in words is "twenty-two trillion, one hundred billion, three hundred twenty-two million, three hundred three thousand, two hundred twenty-one".