12110012001 has 10 divisors (see below), whose sum is σ = 18090264962. Its totient is φ = 8073341280.

The previous prime is 12110011993. The next prime is 12110012017. The reversal of 12110012001 is 10021001121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12105500625 + 4511376 = 110025^2 + 2124^2 .

It is not a de Polignac number, because 12110012001 - 2³ = 12110011993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12110012021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 74753080 + ... + 74753241.

Almost surely, 2^12110012001 is an apocalyptic number.

It is an amenable number.

12110012001 is a deficient number, since it is larger than the sum of its proper divisors (5980252961).

12110012001 is an equidigital number, since it uses as much as digits as its factorization.

12110012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149506333 (or 149506324 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12110012001 its reverse (10021001121), we get a palindrome (22131013122).

The spelling of 12110012001 in words is "twelve billion, one hundred ten million, twelve thousand, one".