7221173888399 has 2 divisors, whose sum is σ = 7221173888400. Its totient is φ = 7221173888398.

The previous prime is 7221173888393. The next prime is 7221173888443. The reversal of 7221173888399 is 9938883711227.

7221173888399 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7221173888399 - 2³² = 7216878921103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7221173888393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610586944199 + 3610586944200.

It is an arithmetic number, because the mean of its divisors is an integer number (3610586944200).

Almost surely, 2^{7221173888399} is an apocalyptic number.

7221173888399 is a deficient number, since it is larger than the sum of its proper divisors (1).

7221173888399 is an equidigital number, since it uses as much as digits as its factorization.

7221173888399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73156608, while the sum is 68.

The spelling of 7221173888399 in words is "seven trillion, two hundred twenty-one billion, one hundred seventy-three million, eight hundred eighty-eight thousand, three hundred ninety-nine".