8221116801731 has 2 divisors, whose sum is σ = 8221116801732. Its totient is φ = 8221116801730.

The previous prime is 8221116801691. The next prime is 8221116801739. The reversal of 8221116801731 is 1371086111228.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8221116801731 is a prime.

It is a super-2 number, since 2×8221116801731² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8221116801739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110558400865 + 4110558400866.

It is an arithmetic number, because the mean of its divisors is an integer number (4110558400866).

Almost surely, 2^{8221116801731} is an apocalyptic number.

8221116801731 is a deficient number, since it is larger than the sum of its proper divisors (1).

8221116801731 is an equidigital number, since it uses as much as digits as its factorization.

8221116801731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 41.

The spelling of 8221116801731 in words is "eight trillion, two hundred twenty-one billion, one hundred sixteen million, eight hundred one thousand, seven hundred thirty-one".