21140332441 has 8 divisors (see below), whose sum is σ = 21543439104. Its totient is φ = 20737382640.

The previous prime is 21140332363. The next prime is 21140332453. The reversal of 21140332441 is 14423304112.

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 21140332441 - 2⁷ = 21140332313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21140332481) 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, 253510 + ... + 326416.

It is an arithmetic number, because the mean of its divisors is an integer number (2692929888).

Almost surely, 2^21140332441 is an apocalyptic number.

It is an amenable number.

21140332441 is a deficient number, since it is larger than the sum of its proper divisors (403106663).

21140332441 is an equidigital number, since it uses as much as digits as its factorization.

21140332441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78431.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21140332441 its reverse (14423304112), we get a palindrome (35563636553).

The spelling of 21140332441 in words is "twenty-one billion, one hundred forty million, three hundred thirty-two thousand, four hundred forty-one".