22010415221 has 2 divisors, whose sum is σ = 22010415222. Its totient is φ = 22010415220.

The previous prime is 22010415199. The next prime is 22010415241. The reversal of 22010415221 is 12251401022.

It is an a-pointer prime, because the next prime (22010415241) can be obtained adding 22010415221 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18228780196 + 3781635025 = 135014^2 + 61495^2 .

It is a cyclic number.

It is not a de Polignac number, because 22010415221 - 2²² = 22006220917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22010415193 and 22010415202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22010415241) 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 as a sum of consecutive naturals, namely, 11005207610 + 11005207611.

It is an arithmetic number, because the mean of its divisors is an integer number (11005207611).

Almost surely, 2^22010415221 is an apocalyptic number.

It is an amenable number.

22010415221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22010415221 is an equidigital number, since it uses as much as digits as its factorization.

22010415221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 22010415221 its reverse (12251401022), we get a palindrome (34261816243).

The spelling of 22010415221 in words is "twenty-two billion, ten million, four hundred fifteen thousand, two hundred twenty-one".