12235721441 has 16 divisors (see below), whose sum is σ = 13335547200. Its totient is φ = 11182183488.

The previous prime is 12235721437. The next prime is 12235721467. The reversal of 12235721441 is 14412753221.

It is a happy number.

12235721441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12235721441 - 2² = 12235721437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12235721398 and 12235721407.

It is not an unprimeable number, because it can be changed into a prime (12235721341) 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 15 ways as a sum of consecutive naturals, for example, 659210 + ... + 677516.

It is an arithmetic number, because the mean of its divisors is an integer number (833471700).

Almost surely, 2^12235721441 is an apocalyptic number.

It is an amenable number.

12235721441 is a deficient number, since it is larger than the sum of its proper divisors (1099825759).

12235721441 is a wasteful number, since it uses less digits than its factorization.

12235721441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19568.

The product of its digits is 13440, while the sum is 32.

The spelling of 12235721441 in words is "twelve billion, two hundred thirty-five million, seven hundred twenty-one thousand, four hundred forty-one".