12011801 has 4 divisors (see below), whose sum is σ = 12135732. Its totient is φ = 11887872.

The previous prime is 12011789. The next prime is 12011807. The reversal of 12011801 is 10811021.

12011801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10811021 = 13 ⋅831617.

It can be written as a sum of positive squares in 2 ways, for example, as 4305625 + 7706176 = 2075^2 + 2776^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011801 - 2¹⁰ = 12010777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011807) 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, 61820 + ... + 62013.

It is an arithmetic number, because the mean of its divisors is an integer number (3033933).

Almost surely, 2^12011801 is an apocalyptic number.

It is an amenable number.

12011801 is a deficient number, since it is larger than the sum of its proper divisors (123931).

12011801 is an equidigital number, since it uses as much as digits as its factorization.

12011801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123930.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 12011801 is about 3465.8045242050. The cubic root of 12011801 is about 229.0178726604.

Adding to 12011801 its reverse (10811021), we get a palindrome (22822822).

The spelling of 12011801 in words is "twelve million, eleven thousand, eight hundred one".