21323030021133 has 16 divisors (see below), whose sum is σ = 28475957721600. Its totient is φ = 14192729856176.

The previous prime is 21323030021099. The next prime is 21323030021179. The reversal of 21323030021133 is 33112003032312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21323030021133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323030021233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43988518 + ... + 44470616.

It is an arithmetic number, because the mean of its divisors is an integer number (1779747357600).

Almost surely, 2^{21323030021133} is an apocalyptic number.

It is an amenable number.

21323030021133 is a deficient number, since it is larger than the sum of its proper divisors (7152927700467).

21323030021133 is a wasteful number, since it uses less digits than its factorization.

21323030021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505536.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21323030021133 its reverse (33112003032312), we get a palindrome (54435033053445).

The spelling of 21323030021133 in words is "twenty-one trillion, three hundred twenty-three billion, thirty million, twenty-one thousand, one hundred thirty-three".