12001294087 has 4 divisors (see below), whose sum is σ = 12001575040. Its totient is φ = 12001013136.

The previous prime is 12001294051. The next prime is 12001294091. The reversal of 12001294087 is 78049210021.

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

It is a cyclic number.

It is not a de Polignac number, because 12001294087 - 2⁷ = 12001293959 is a prime.

It is a super-2 number, since 2×12001294087² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001294037) 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, 61662 + ... + 166747.

It is an arithmetic number, because the mean of its divisors is an integer number (3000393760).

Almost surely, 2^12001294087 is an apocalyptic number.

12001294087 is a deficient number, since it is larger than the sum of its proper divisors (280953).

12001294087 is an equidigital number, since it uses as much as digits as its factorization.

12001294087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280952.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 12001294087 in words is "twelve billion, one million, two hundred ninety-four thousand, eighty-seven".