12235220401 has 4 divisors (see below), whose sum is σ = 12239629092. Its totient is φ = 12230811712.

The previous prime is 12235220383. The next prime is 12235220423. The reversal of 12235220401 is 10402253221.

It is a happy number.

12235220401 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.

It can be written as a sum of positive squares in 2 ways, for example, as 2223216801 + 10012003600 = 47151^2 + 100060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12235220401 is a prime.

It is a super-2 number, since 2×12235220401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12235227401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2200180 + ... + 2205733.

It is an arithmetic number, because the mean of its divisors is an integer number (3059907273).

Almost surely, 2^12235220401 is an apocalyptic number.

It is an amenable number.

12235220401 is a deficient number, since it is larger than the sum of its proper divisors (4408691).

12235220401 is an equidigital number, since it uses as much as digits as its factorization.

12235220401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4408690.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 12235220401 its reverse (10402253221), we get a palindrome (22637473622).

The spelling of 12235220401 in words is "twelve billion, two hundred thirty-five million, two hundred twenty thousand, four hundred one".