21330041616245 has 4 divisors (see below), whose sum is σ = 25596049939500. Its totient is φ = 17064033292992.

The previous prime is 21330041616179. The next prime is 21330041616269. The reversal of 21330041616245 is 54261614003312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8614776788836 + 12715264827409 = 2935094^2 + 3565847^2 .

It is a cyclic number.

It is not a de Polignac number, because 21330041616245 - 2²⁶ = 21329974507381 is a prime.

It is a super-2 number, since 2×21330041616245² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21330041616199 and 21330041616208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133004161620 + ... + 2133004161629.

It is an arithmetic number, because the mean of its divisors is an integer number (6399012484875).

Almost surely, 2^{21330041616245} is an apocalyptic number.

It is an amenable number.

21330041616245 is a deficient number, since it is larger than the sum of its proper divisors (4266008323255).

21330041616245 is an equidigital number, since it uses as much as digits as its factorization.

21330041616245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4266008323254.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 21330041616245 its reverse (54261614003312), we get a palindrome (75591655619557).

The spelling of 21330041616245 in words is "twenty-one trillion, three hundred thirty billion, forty-one million, six hundred sixteen thousand, two hundred forty-five".