7227216272761 has 2 divisors, whose sum is σ = 7227216272762. Its totient is φ = 7227216272760.

The previous prime is 7227216272729. The next prime is 7227216272791. The reversal of 7227216272761 is 1672726127227.

7227216272761 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 can be written as a sum of positive squares in only one way, i.e., 7188130982761 + 39085290000 = 2681069^2 + 197700^2 .

It is an emirp because it is prime and its reverse (1672726127227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7227216272761 - 2⁵ = 7227216272729 is a prime.

It is a super-2 number, since 2×7227216272761² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7227216272699 and 7227216272708.

It is not a weakly prime, because it can be changed into another prime (7227216272791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3613608136380 + 3613608136381.

It is an arithmetic number, because the mean of its divisors is an integer number (3613608136381).

Almost surely, 2^{7227216272761} is an apocalyptic number.

It is an amenable number.

7227216272761 is a deficient number, since it is larger than the sum of its proper divisors (1).

7227216272761 is an equidigital number, since it uses as much as digits as its factorization.

7227216272761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2765952, while the sum is 52.

The spelling of 7227216272761 in words is "seven trillion, two hundred twenty-seven billion, two hundred sixteen million, two hundred seventy-two thousand, seven hundred sixty-one".