12001110011001 has 8 divisors (see below), whose sum is σ = 17779422238560. Its totient is φ = 8000740007316.

The previous prime is 12001110010991. The next prime is 12001110011017. The reversal of 12001110011001 is 10011001110021.

It is not a de Polignac number, because 12001110011001 - 2⁶ = 12001110010937 is a prime.

It is a super-2 number, since 2×12001110011001² (a number of 27 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (12001110011081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222242777955 + ... + 222242778008.

It is an arithmetic number, because the mean of its divisors is an integer number (2222427779820).

Almost surely, 2^{12001110011001} is an apocalyptic number.

It is an amenable number.

12001110011001 is a deficient number, since it is larger than the sum of its proper divisors (5778312227559).

12001110011001 is an equidigital number, since it uses as much as digits as its factorization.

12001110011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444485555972 (or 444485555966 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 12001110011001 its reverse (10011001110021), we get a palindrome (22012111121022).

The spelling of 12001110011001 in words is "twelve trillion, one billion, one hundred ten million, eleven thousand, one".