226721067449 has 2 divisors, whose sum is σ = 226721067450. Its totient is φ = 226721067448.

The previous prime is 226721067319. The next prime is 226721067457. The reversal of 226721067449 is 944760127622.

226721067449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225465428224 + 1255639225 = 474832^2 + 35435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226721067449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 226721067397 and 226721067406.

It is not a weakly prime, because it can be changed into another prime (226721067479) 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, 113360533724 + 113360533725.

It is an arithmetic number, because the mean of its divisors is an integer number (113360533725).

Almost surely, 2^226721067449 is an apocalyptic number.

It is an amenable number.

226721067449 is a deficient number, since it is larger than the sum of its proper divisors (1).

226721067449 is an equidigital number, since it uses as much as digits as its factorization.

226721067449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 226721067449 in words is "two hundred twenty-six billion, seven hundred twenty-one million, sixty-seven thousand, four hundred forty-nine".