12065711756021 has 24 divisors (see below), whose sum is σ = 15311959036416. Its totient is φ = 9401626523520.

The previous prime is 12065711756011. The next prime is 12065711756023.

12065711756021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12065711756021 - 2¹⁰ = 12065711754997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12065711756023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24140765 + ... + 24635501.

It is an arithmetic number, because the mean of its divisors is an integer number (637998293184).

Almost surely, 2^{12065711756021} is an apocalyptic number.

12065711756021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12065711756021 is a deficient number, since it is larger than the sum of its proper divisors (3246247280395).

12065711756021 is a wasteful number, since it uses less digits than its factorization.

12065711756021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540009 (or 540002 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 12065711756021 in words is "twelve trillion, sixty-five billion, seven hundred eleven million, seven hundred fifty-six thousand, twenty-one".