21241104331 has 4 divisors (see below), whose sum is σ = 21269164672. Its totient is φ = 21213043992.

The previous prime is 21241104319. The next prime is 21241104361. The reversal of 21241104331 is 13340114212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21241104331 - 2¹¹ = 21241102283 is a prime.

It is a super-2 number, since 2×21241104331² (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 (21241104301) 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, 14029035 + ... + 14030548.

It is an arithmetic number, because the mean of its divisors is an integer number (5317291168).

Almost surely, 2^21241104331 is an apocalyptic number.

21241104331 is a deficient number, since it is larger than the sum of its proper divisors (28060341).

21241104331 is an equidigital number, since it uses as much as digits as its factorization.

21241104331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28060340.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21241104331 its reverse (13340114212), we get a palindrome (34581218543).

The spelling of 21241104331 in words is "twenty-one billion, two hundred forty-one million, one hundred four thousand, three hundred thirty-one".