12031012001 has 4 divisors (see below), whose sum is σ = 12035024004. Its totient is φ = 12027000000.

The previous prime is 12031011961. The next prime is 12031012027. The reversal of 12031012001 is 10021013021.

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 3099816976 + 8931195025 = 55676^2 + 94505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12031012001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12031012061) 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, 2001500 + ... + 2007501.

It is an arithmetic number, because the mean of its divisors is an integer number (3008756001).

Almost surely, 2^12031012001 is an apocalyptic number.

It is an amenable number.

12031012001 is a deficient number, since it is larger than the sum of its proper divisors (4012003).

12031012001 is an equidigital number, since it uses as much as digits as its factorization.

12031012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012002.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 12031012001 its reverse (10021013021), we get a palindrome (22052025022).

The spelling of 12031012001 in words is "twelve billion, thirty-one million, twelve thousand, one".