7221174412687 has 2 divisors, whose sum is σ = 7221174412688. Its totient is φ = 7221174412686.

The previous prime is 7221174412643. The next prime is 7221174412691. The reversal of 7221174412687 is 7862144711227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7221174412687 - 2¹⁹ = 7221173888399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7221174212687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610587206343 + 3610587206344.

It is an arithmetic number, because the mean of its divisors is an integer number (3610587206344).

Almost surely, 2^{7221174412687} is an apocalyptic number.

7221174412687 is a deficient number, since it is larger than the sum of its proper divisors (1).

7221174412687 is an equidigital number, since it uses as much as digits as its factorization.

7221174412687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2107392, while the sum is 52.

The spelling of 7221174412687 in words is "seven trillion, two hundred twenty-one billion, one hundred seventy-four million, four hundred twelve thousand, six hundred eighty-seven".