21330300131021 has 8 divisors (see below), whose sum is σ = 24392655438720. Its totient is φ = 18271737217008.

The previous prime is 21330300131011. The next prime is 21330300131059. The reversal of 21330300131021 is 12013100303312.

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 21330300131021 - 2¹⁸ = 21330299868877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21330300130984 and 21330300131002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21330300131011) 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, 948086366 + ... + 948108863.

It is an arithmetic number, because the mean of its divisors is an integer number (3049081929840).

Almost surely, 2^{21330300131021} is an apocalyptic number.

It is an amenable number.

21330300131021 is a deficient number, since it is larger than the sum of its proper divisors (3062355307699).

21330300131021 is a wasteful number, since it uses less digits than its factorization.

21330300131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896196843.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21330300131021 its reverse (12013100303312), we get a palindrome (33343400434333).

The spelling of 21330300131021 in words is "twenty-one trillion, three hundred thirty billion, three hundred million, one hundred thirty-one thousand, twenty-one".