21520450014033 has 8 divisors (see below), whose sum is σ = 28859794239168. Its totient is φ = 14264036232464.

The previous prime is 21520450014029. The next prime is 21520450014059. The reversal of 21520450014033 is 33041005402512.

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 21520450014033 - 2² = 21520450014029 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21520450014023) 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, 20732610285 + ... + 20732611322.

It is an arithmetic number, because the mean of its divisors is an integer number (3607474279896).

Almost surely, 2^{21520450014033} is an apocalyptic number.

It is an amenable number.

21520450014033 is a deficient number, since it is larger than the sum of its proper divisors (7339344225135).

21520450014033 is a wasteful number, since it uses less digits than its factorization.

21520450014033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41465221783.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21520450014033 its reverse (33041005402512), we get a palindrome (54561455416545).

The spelling of 21520450014033 in words is "twenty-one trillion, five hundred twenty billion, four hundred fifty million, fourteen thousand, thirty-three".