21301312100033 has 4 divisors (see below), whose sum is σ = 24344356685760. Its totient is φ = 18258267514308.

The previous prime is 21301312099973. The next prime is 21301312100039. The reversal of 21301312100033 is 33000121310312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21301312100033 - 2¹⁸ = 21301311837889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21301312099978 and 21301312100014.

It is not an unprimeable number, because it can be changed into a prime (21301312100039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521522292853 + ... + 1521522292866.

It is an arithmetic number, because the mean of its divisors is an integer number (6086089171440).

Almost surely, 2^{21301312100033} is an apocalyptic number.

It is an amenable number.

21301312100033 is a deficient number, since it is larger than the sum of its proper divisors (3043044585727).

21301312100033 is an equidigital number, since it uses as much as digits as its factorization.

21301312100033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043044585726.

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

Adding to 21301312100033 its reverse (33000121310312), we get a palindrome (54301433410345).

The spelling of 21301312100033 in words is "twenty-one trillion, three hundred one billion, three hundred twelve million, one hundred thousand, thirty-three".