21321312200333 has 4 divisors (see below), whose sum is σ = 21682690373280. Its totient is φ = 20959934027388.

The previous prime is 21321312200281. The next prime is 21321312200347. The reversal of 21321312200333 is 33300221312312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21321312200333 - 2²² = 21321308006029 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 (21321312200393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180689086385 + ... + 180689086502.

It is an arithmetic number, because the mean of its divisors is an integer number (5420672593320).

Almost surely, 2^{21321312200333} is an apocalyptic number.

It is an amenable number.

21321312200333 is a deficient number, since it is larger than the sum of its proper divisors (361378172947).

21321312200333 is an equidigital number, since it uses as much as digits as its factorization.

21321312200333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361378172946.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 21321312200333 its reverse (33300221312312), we get a palindrome (54621533512645).

The spelling of 21321312200333 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred twelve million, two hundred thousand, three hundred thirty-three".