21330133043224 has 32 divisors (see below), whose sum is σ = 41106376389600. Its totient is φ = 10372361598720.

The previous prime is 21330133043207. The next prime is 21330133043243. The reversal of 21330133043224 is 42234033103312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 245514372 + ... + 245601235.

It is an arithmetic number, because the mean of its divisors is an integer number (1284574262175).

Almost surely, 2^{21330133043224} is an apocalyptic number.

It is an amenable number.

21330133043224 is a deficient number, since it is larger than the sum of its proper divisors (19776243346376).

21330133043224 is a wasteful number, since it uses less digits than its factorization.

21330133043224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491115763 (or 491115759 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 21330133043224 its reverse (42234033103312), we get a palindrome (63564166146536).

The spelling of 21330133043224 in words is "twenty-one trillion, three hundred thirty billion, one hundred thirty-three million, forty-three thousand, two hundred twenty-four".