12381235441 has 3 divisors (see below), whose sum is σ = 12381346713. Its totient is φ = 12381124170.

The previous prime is 12381235429. The next prime is 12381235457. The reversal of 12381235441 is 14453218321.

The square root of 12381235441 is 111271.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 12381235441 - 2¹¹ = 12381233393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12381235397 and 12381235406.

It is not an unprimeable number, because it can be changed into a prime (12381235481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 55636 + ... + 166906.

It is an arithmetic number, because the mean of its divisors is an integer number (4127115571).

Almost surely, 2^12381235441 is an apocalyptic number.

12381235441 is the 111271-st square number.

12381235441 is the 55636-th centered octagonal number.

It is an amenable number.

12381235441 is a deficient number, since it is larger than the sum of its proper divisors (111272).

12381235441 is an frugal number, since it uses more digits than its factorization.

12381235441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222542 (or 111271 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The spelling of 12381235441 in words is "twelve billion, three hundred eighty-one million, two hundred thirty-five thousand, four hundred forty-one".