245112223410221 has 2 divisors, whose sum is σ = 245112223410222. Its totient is φ = 245112223410220.

The previous prime is 245112223410217. The next prime is 245112223410281. The reversal of 245112223410221 is 122014322211542.

It is a happy number.

245112223410221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245111901602500 + 321807721 = 15656050^2 + 17939^2 .

It is a cyclic number.

It is not a de Polignac number, because 245112223410221 - 2² = 245112223410217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245112223410211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122556111705110 + 122556111705111.

It is an arithmetic number, because the mean of its divisors is an integer number (122556111705111).

Almost surely, 2^{245112223410221} is an apocalyptic number.

It is an amenable number.

245112223410221 is a deficient number, since it is larger than the sum of its proper divisors (1).

245112223410221 is an equidigital number, since it uses as much as digits as its factorization.

245112223410221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 245112223410221 its reverse (122014322211542), we get a palindrome (367126545621763).

The spelling of 245112223410221 in words is "two hundred forty-five trillion, one hundred twelve billion, two hundred twenty-three million, four hundred ten thousand, two hundred twenty-one".