21441401333 has 8 divisors (see below), whose sum is σ = 24621705120. Its totient is φ = 18466278480.

The previous prime is 21441401309. The next prime is 21441401341. The reversal of 21441401333 is 33310414412.

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 a de Polignac number, because none of the positive numbers 2^k-21441401333 is a prime.

It is a super-2 number, since 2×21441401333² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441401393) 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 7 ways as a sum of consecutive naturals, for example, 51295010 + ... + 51295427.

It is an arithmetic number, because the mean of its divisors is an integer number (3077713140).

Almost surely, 2^21441401333 is an apocalyptic number.

It is an amenable number.

21441401333 is a deficient number, since it is larger than the sum of its proper divisors (3180303787).

21441401333 is a wasteful number, since it uses less digits than its factorization.

21441401333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102590467.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21441401333 its reverse (33310414412), we get a palindrome (54751815745).

The spelling of 21441401333 in words is "twenty-one billion, four hundred forty-one million, four hundred one thousand, three hundred thirty-three".