22010045221 has 2 divisors, whose sum is σ = 22010045222. Its totient is φ = 22010045220.

The previous prime is 22010045207. The next prime is 22010045257. The reversal of 22010045221 is 12254001022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21103372900 + 906672321 = 145270^2 + 30111^2 .

It is a cyclic number.

It is not a de Polignac number, because 22010045221 - 2⁹ = 22010044709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22010049221) 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, 11005022610 + 11005022611.

It is an arithmetic number, because the mean of its divisors is an integer number (11005022611).

Almost surely, 2^22010045221 is an apocalyptic number.

It is an amenable number.

22010045221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22010045221 is an equidigital number, since it uses as much as digits as its factorization.

22010045221 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 19.

Adding to 22010045221 its reverse (12254001022), we get a palindrome (34264046243).

The spelling of 22010045221 in words is "twenty-two billion, ten million, forty-five thousand, two hundred twenty-one".