7228722287251 has 2 divisors, whose sum is σ = 7228722287252. Its totient is φ = 7228722287250.

The previous prime is 7228722287141. The next prime is 7228722287261. The reversal of 7228722287251 is 1527822278227.

7228722287251 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7228722287251 - 2¹¹ = 7228722285203 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7228722287192 and 7228722287201.

It is not a weakly prime, because it can be changed into another prime (7228722287261) 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, 3614361143625 + 3614361143626.

It is an arithmetic number, because the mean of its divisors is an integer number (3614361143626).

Almost surely, 2^{7228722287251} is an apocalyptic number.

7228722287251 is a deficient number, since it is larger than the sum of its proper divisors (1).

7228722287251 is an equidigital number, since it uses as much as digits as its factorization.

7228722287251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7024640, while the sum is 55.

The spelling of 7228722287251 in words is "seven trillion, two hundred twenty-eight billion, seven hundred twenty-two million, two hundred eighty-seven thousand, two hundred fifty-one".