12012040001 has 4 divisors (see below), whose sum is σ = 12936043092. Its totient is φ = 11088036912.

The previous prime is 12012039997. The next prime is 12012040009. The reversal of 12012040001 is 10004021021.

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 4126777600 + 7885262401 = 64240^2 + 88799^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012040001 - 2² = 12012039997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012040009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462001526 + ... + 462001551.

It is an arithmetic number, because the mean of its divisors is an integer number (3234010773).

Almost surely, 2^12012040001 is an apocalyptic number.

It is an amenable number.

12012040001 is a deficient number, since it is larger than the sum of its proper divisors (924003091).

12012040001 is an equidigital number, since it uses as much as digits as its factorization.

12012040001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924003090.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12012040001 its reverse (10004021021), we get a palindrome (22016061022).

The spelling of 12012040001 in words is "twelve billion, twelve million, forty thousand, one".