21231303000133 has 16 divisors (see below), whose sum is σ = 22483246302720. Its totient is φ = 19992817635696.

The previous prime is 21231303000119. The next prime is 21231303000137. The reversal of 21231303000133 is 33100030313212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21231303000133 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 (21231303000137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131494110 + ... + 131655472.

It is an arithmetic number, because the mean of its divisors is an integer number (1405202893920).

Almost surely, 2^{21231303000133} is an apocalyptic number.

It is an amenable number.

21231303000133 is a deficient number, since it is larger than the sum of its proper divisors (1251943302587).

21231303000133 is a wasteful number, since it uses less digits than its factorization.

21231303000133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203016.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21231303000133 its reverse (33100030313212), we get a palindrome (54331333313345).

The spelling of 21231303000133 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred three million, one hundred thirty-three", and thus it is an aban number.