21442104133 has 8 divisors (see below), whose sum is σ = 21707179200. Its totient is φ = 21178602720.

The previous prime is 21442104127. The next prime is 21442104137. The reversal of 21442104133 is 33140124412.

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 21442104133 - 2²¹ = 21440006981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21442104098 and 21442104107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442104137) 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 7 ways as a sum of consecutive naturals, for example, 365983 + ... + 420508.

It is an arithmetic number, because the mean of its divisors is an integer number (2713397400).

Almost surely, 2^21442104133 is an apocalyptic number.

It is an amenable number.

21442104133 is a deficient number, since it is larger than the sum of its proper divisors (265075067).

21442104133 is a wasteful number, since it uses less digits than its factorization.

21442104133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786827.

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

Adding to 21442104133 its reverse (33140124412), we get a palindrome (54582228545).

The spelling of 21442104133 in words is "twenty-one billion, four hundred forty-two million, one hundred four thousand, one hundred thirty-three".