12031020001 has 64 divisors (see below), whose sum is σ = 17046650880. Its totient is φ = 8177552640.

The previous prime is 12031019993. The next prime is 12031020017. The reversal of 12031020001 is 10002013021.

It is a cyclic number.

It is not a de Polignac number, because 12031020001 - 2³ = 12031019993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12031020001.

It is not an unprimeable number, because it can be changed into a prime (12031020031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13940496 + ... + 13941358.

It is an arithmetic number, because the mean of its divisors is an integer number (266353920).

Almost surely, 2^12031020001 is an apocalyptic number.

12031020001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12031020001 is a deficient number, since it is larger than the sum of its proper divisors (5015630879).

12031020001 is a wasteful number, since it uses less digits than its factorization.

12031020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 12031020001 its reverse (10002013021), we get a palindrome (22033033022).

The spelling of 12031020001 in words is "twelve billion, thirty-one million, twenty thousand, one".