21333232333209 has 16 divisors (see below), whose sum is σ = 28584325263872. Its totient is φ = 14152202782848.

The previous prime is 21333232333199. The next prime is 21333232333249. The reversal of 21333232333209 is 90233323233312.

It is not a de Polignac number, because 21333232333209 - 2³² = 21328937365913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21333232333249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5419372 + ... + 8487405.

It is an arithmetic number, because the mean of its divisors is an integer number (1786520328992).

Almost surely, 2^{21333232333209} is an apocalyptic number.

It is an amenable number.

21333232333209 is a deficient number, since it is larger than the sum of its proper divisors (7251092930663).

21333232333209 is a wasteful number, since it uses less digits than its factorization.

21333232333209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13909296.

The product of its (nonzero) digits is 314928, while the sum is 39.

The spelling of 21333232333209 in words is "twenty-one trillion, three hundred thirty-three billion, two hundred thirty-two million, three hundred thirty-three thousand, two hundred nine".