21343000133 has 16 divisors (see below), whose sum is σ = 26528401536. Its totient is φ = 16719566400.

The previous prime is 21343000127. The next prime is 21343000141. The reversal of 21343000133 is 33100034312.

It is a cyclic number.

It is not a de Polignac number, because 21343000133 - 2⁶ = 21343000069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343000033) 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, 1151891 + ... + 1170272.

It is an arithmetic number, because the mean of its divisors is an integer number (1658025096).

Almost surely, 2^21343000133 is an apocalyptic number.

It is an amenable number.

21343000133 is a deficient number, since it is larger than the sum of its proper divisors (5185401403).

21343000133 is a wasteful number, since it uses less digits than its factorization.

21343000133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322284.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21343000133 its reverse (33100034312), we get a palindrome (54443034445).

The spelling of 21343000133 in words is "twenty-one billion, three hundred forty-three million, one hundred thirty-three", and thus it is an aban number.