21043142354333 has 8 divisors (see below), whose sum is σ = 22957124643840. Its totient is φ = 19129321622880.

The previous prime is 21043142354329. The next prime is 21043142354371. The reversal of 21043142354333 is 33345324134012.

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 21043142354333 - 2² = 21043142354329 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 (21043142354303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40117085 + ... + 40638242.

It is an arithmetic number, because the mean of its divisors is an integer number (2869640580480).

Almost surely, 2^{21043142354333} is an apocalyptic number.

It is an amenable number.

21043142354333 is a deficient number, since it is larger than the sum of its proper divisors (1913982289507).

21043142354333 is a wasteful number, since it uses less digits than its factorization.

21043142354333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80779027.

The product of its (nonzero) digits is 311040, while the sum is 38.

Adding to 21043142354333 its reverse (33345324134012), we get a palindrome (54388466488345).

The spelling of 21043142354333 in words is "twenty-one trillion, forty-three billion, one hundred forty-two million, three hundred fifty-four thousand, three hundred thirty-three".