21321130033333 has 16 divisors (see below), whose sum is σ = 23454436513536. Its totient is φ = 19258450741440.

The previous prime is 21321130033297. The next prime is 21321130033367. The reversal of 21321130033333 is 33333003112312.

It is a cyclic number.

It is not a de Polignac number, because 21321130033333 - 2³⁷ = 21183691079861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321130033433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420166 + ... + 6543607.

It is an arithmetic number, because the mean of its divisors is an integer number (1465902282096).

Almost surely, 2^{21321130033333} is an apocalyptic number.

It is an amenable number.

21321130033333 is a deficient number, since it is larger than the sum of its proper divisors (2133306480203).

21321130033333 is a wasteful number, since it uses less digits than its factorization.

21321130033333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6968844.

The product of its (nonzero) digits is 8748, while the sum is 28.

Adding to 21321130033333 its reverse (33333003112312), we get a palindrome (54654133145645).

The spelling of 21321130033333 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty million, thirty-three thousand, three hundred thirty-three".