21241404322133 has 4 divisors (see below), whose sum is σ = 21241426668000. Its totient is φ = 21241381976268.

The previous prime is 21241404322081. The next prime is 21241404322169. The reversal of 21241404322133 is 33122340414212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21241404322133 - 2²⁰ = 21241403273557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21241404322133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241404321133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9680633 + ... + 11670366.

It is an arithmetic number, because the mean of its divisors is an integer number (5310356667000).

Almost surely, 2^{21241404322133} is an apocalyptic number.

It is an amenable number.

21241404322133 is a deficient number, since it is larger than the sum of its proper divisors (22345867).

21241404322133 is an equidigital number, since it uses as much as digits as its factorization.

21241404322133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22345866.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21241404322133 its reverse (33122340414212), we get a palindrome (54363744736345).

The spelling of 21241404322133 in words is "twenty-one trillion, two hundred forty-one billion, four hundred four million, three hundred twenty-two thousand, one hundred thirty-three".