7221174212687 has 2 divisors, whose sum is σ = 7221174212688. Its totient is φ = 7221174212686.

The previous prime is 7221174212677. The next prime is 7221174212701. The reversal of 7221174212687 is 7862124711227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7221174212687 - 2⁸ = 7221174212431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7221174212617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610587106343 + 3610587106344.

It is an arithmetic number, because the mean of its divisors is an integer number (3610587106344).

Almost surely, 2^{7221174212687} is an apocalyptic number.

7221174212687 is a deficient number, since it is larger than the sum of its proper divisors (1).

7221174212687 is an equidigital number, since it uses as much as digits as its factorization.

7221174212687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1053696, while the sum is 50.

The spelling of 7221174212687 in words is "seven trillion, two hundred twenty-one billion, one hundred seventy-four million, two hundred twelve thousand, six hundred eighty-seven".