12001101231 has 16 divisors (see below), whose sum is σ = 18537906944. Its totient is φ = 6763829184.

The previous prime is 12001101191. The next prime is 12001101247. The reversal of 12001101231 is 13210110021.

It is not a de Polignac number, because 12001101231 - 2³⁰ = 10927359407 is a prime.

It is a super-2 number, since 2×12001101231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001101731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3912721 + ... + 3915786.

It is an arithmetic number, because the mean of its divisors is an integer number (1158619184).

Almost surely, 2^12001101231 is an apocalyptic number.

12001101231 is a deficient number, since it is larger than the sum of its proper divisors (6536805713).

12001101231 is an equidigital number, since it uses as much as digits as its factorization.

12001101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7828590.

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

Adding to 12001101231 its reverse (13210110021), we get a palindrome (25211211252).

The spelling of 12001101231 in words is "twelve billion, one million, one hundred one thousand, two hundred thirty-one".