7206761021 has 2 divisors, whose sum is σ = 7206761022. Its totient is φ = 7206761020.

The previous prime is 7206760973. The next prime is 7206761039. The reversal of 7206761021 is 1201676027.

7206761021 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., 7070455396 + 136305625 = 84086^2 + 11675^2 .

It is a cyclic number.

It is not a de Polignac number, because 7206761021 - 2¹⁸ = 7206498877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7206761041) 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, 3603380510 + 3603380511.

It is an arithmetic number, because the mean of its divisors is an integer number (3603380511).

Almost surely, 2^7206761021 is an apocalyptic number.

It is an amenable number.

7206761021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7206761021 is an equidigital number, since it uses as much as digits as its factorization.

7206761021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 7206761021 is about 84892.6440924065. The cubic root of 7206761021 is about 1931.5829962330.

The spelling of 7206761021 in words is "seven billion, two hundred six million, seven hundred sixty-one thousand, twenty-one".