22201304221 has 2 divisors, whose sum is σ = 22201304222. Its totient is φ = 22201304220.

The previous prime is 22201304171. The next prime is 22201304261. The reversal of 22201304221 is 12240310222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17526847321 + 4674456900 = 132389^2 + 68370^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201304221 - 2¹⁵ = 22201271453 is a prime.

It is a super-2 number, since 2×22201304221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22201304261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100652110 + 11100652111.

It is an arithmetic number, because the mean of its divisors is an integer number (11100652111).

Almost surely, 2^22201304221 is an apocalyptic number.

It is an amenable number.

22201304221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201304221 is an equidigital number, since it uses as much as digits as its factorization.

22201304221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22201304221 its reverse (12240310222), we get a palindrome (34441614443).

The spelling of 22201304221 in words is "twenty-two billion, two hundred one million, three hundred four thousand, two hundred twenty-one".