21603213604133 has 8 divisors (see below), whose sum is σ = 24689460058368. Its totient is φ = 18516985420464.

The previous prime is 21603213604097. The next prime is 21603213604157. The reversal of 21603213604133 is 33140631230612.

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 21603213604133 - 2⁶ = 21603213604069 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21603213604093 and 21603213604102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21603213604333) 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, 1932566 + ... + 6851367.

It is an arithmetic number, because the mean of its divisors is an integer number (3086182507296).

Almost surely, 2^{21603213604133} is an apocalyptic number.

It is an amenable number.

21603213604133 is a deficient number, since it is larger than the sum of its proper divisors (3086246454235).

21603213604133 is an equidigital number, since it uses as much as digits as its factorization.

21603213604133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9135283.

The product of its (nonzero) digits is 46656, while the sum is 35.

Adding to 21603213604133 its reverse (33140631230612), we get a palindrome (54743844834745).

The spelling of 21603213604133 in words is "twenty-one trillion, six hundred three billion, two hundred thirteen million, six hundred four thousand, one hundred thirty-three".