22231300221 has 24 divisors (see below), whose sum is σ = 34588748376. Its totient is φ = 13678139520.

The previous prime is 22231300181. The next prime is 22231300271. The reversal of 22231300221 is 12200313222.

It can be written as a sum of positive squares in 4 ways, for example, as 1978025625 + 20253274596 = 44475^2 + 142314^2 .

It is not a de Polignac number, because 22231300221 - 2⁹ = 22231299709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22231300194 and 22231300203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231300271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 706851 + ... + 737631.

It is an arithmetic number, because the mean of its divisors is an integer number (1441197849).

Almost surely, 2^22231300221 is an apocalyptic number.

It is an amenable number.

22231300221 is a deficient number, since it is larger than the sum of its proper divisors (12357448155).

22231300221 is a wasteful number, since it uses less digits than its factorization.

22231300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36973 (or 36970 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22231300221 its reverse (12200313222), we get a palindrome (34431613443).

The spelling of 22231300221 in words is "twenty-two billion, two hundred thirty-one million, three hundred thousand, two hundred twenty-one".