12011323201 has 4 divisors (see below), whose sum is σ = 12023543232. Its totient is φ = 11999103172.

The previous prime is 12011323187. The next prime is 12011323213. The reversal of 12011323201 is 10232311021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10232311021 = 21559 ⋅474619.

It is a cyclic number.

It is not a de Polignac number, because 12011323201 - 2¹³ = 12011315009 is a prime.

It is a super-3 number, since 3×12011323201³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011323001) 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, 6108541 + ... + 6110506.

It is an arithmetic number, because the mean of its divisors is an integer number (3005885808).

Almost surely, 2^12011323201 is an apocalyptic number.

It is an amenable number.

12011323201 is a deficient number, since it is larger than the sum of its proper divisors (12220031).

12011323201 is an equidigital number, since it uses as much as digits as its factorization.

12011323201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12220030.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12011323201 its reverse (10232311021), we get a palindrome (22243634222).

The spelling of 12011323201 in words is "twelve billion, eleven million, three hundred twenty-three thousand, two hundred one".