21112786713071 has 2 divisors, whose sum is σ = 21112786713072. Its totient is φ = 21112786713070.

The previous prime is 21112786713061. The next prime is 21112786713089. The reversal of 21112786713071 is 17031768721112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21112786713071 - 2²² = 21112782518767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112786713041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556393356535 + 10556393356536.

It is an arithmetic number, because the mean of its divisors is an integer number (10556393356536).

Almost surely, 2^{21112786713071} is an apocalyptic number.

21112786713071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112786713071 is an equidigital number, since it uses as much as digits as its factorization.

21112786713071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 47.

The spelling of 21112786713071 in words is "twenty-one trillion, one hundred twelve billion, seven hundred eighty-six million, seven hundred thirteen thousand, seventy-one".