10221976782071 has 2 divisors, whose sum is σ = 10221976782072. Its totient is φ = 10221976782070.

The previous prime is 10221976781959. The next prime is 10221976782139. The reversal of 10221976782071 is 17028767912201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221976782071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221976782271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110988391035 + 5110988391036.

It is an arithmetic number, because the mean of its divisors is an integer number (5110988391036).

Almost surely, 2^{10221976782071} is an apocalyptic number.

10221976782071 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221976782071 is an equidigital number, since it uses as much as digits as its factorization.

10221976782071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1185408, while the sum is 53.

The spelling of 10221976782071 in words is "ten trillion, two hundred twenty-one billion, nine hundred seventy-six million, seven hundred eighty-two thousand, seventy-one".