12067206429521 has 4 divisors (see below), whose sum is σ = 12069308369844. Its totient is φ = 12065104489200.

The previous prime is 12067206429437. The next prime is 12067206429529. The reversal of 12067206429521 is 12592460276021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2655416907025 + 9411789522496 = 1629545^2 + 3067864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12067206429521 is a prime.

It is a super-2 number, since 2×12067206429521² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12067206429529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050961550 + ... + 1050973031.

It is an arithmetic number, because the mean of its divisors is an integer number (3017327092461).

Almost surely, 2^{12067206429521} is an apocalyptic number.

It is an amenable number.

12067206429521 is a deficient number, since it is larger than the sum of its proper divisors (2101940323).

12067206429521 is an equidigital number, since it uses as much as digits as its factorization.

12067206429521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101940322.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 12067206429521 in words is "twelve trillion, sixty-seven billion, two hundred six million, four hundred twenty-nine thousand, five hundred twenty-one".