21241112453 has 8 divisors (see below), whose sum is σ = 24391708320. Its totient is φ = 18293780880.

The previous prime is 21241112447. The next prime is 21241112489. The reversal of 21241112453 is 35421114212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21241112453 - 2¹⁰ = 21241111429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241112413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50815850 + ... + 50816267.

It is an arithmetic number, because the mean of its divisors is an integer number (3048963540).

Almost surely, 2^21241112453 is an apocalyptic number.

It is an amenable number.

21241112453 is a deficient number, since it is larger than the sum of its proper divisors (3150595867).

21241112453 is a wasteful number, since it uses less digits than its factorization.

21241112453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101632147.

The product of its digits is 1920, while the sum is 26.

Adding to 21241112453 its reverse (35421114212), we get a palindrome (56662226665).

The spelling of 21241112453 in words is "twenty-one billion, two hundred forty-one million, one hundred twelve thousand, four hundred fifty-three".