21330133043143 has 8 divisors (see below), whose sum is σ = 21392115500160. Its totient is φ = 21268192065120.

The previous prime is 21330133043119. The next prime is 21330133043183. The reversal of 21330133043143 is 34134033103312.

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 21330133043143 - 2⁵ = 21330133043111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330133043183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9339628 + ... + 11396881.

It is an arithmetic number, because the mean of its divisors is an integer number (2674014437520).

Almost surely, 2^{21330133043143} is an apocalyptic number.

21330133043143 is a deficient number, since it is larger than the sum of its proper divisors (61982457017).

21330133043143 is a wasteful number, since it uses less digits than its factorization.

21330133043143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20739497.

The product of its (nonzero) digits is 23328, while the sum is 31.

Adding to 21330133043143 its reverse (34134033103312), we get a palindrome (55464166146455).

The spelling of 21330133043143 in words is "twenty-one trillion, three hundred thirty billion, one hundred thirty-three million, forty-three thousand, one hundred forty-three".