21321300223333 has 16 divisors (see below), whose sum is σ = 23659442953920. Its totient is φ = 19049953840000.

The previous prime is 21321300223303. The next prime is 21321300223339. The reversal of 21321300223333 is 33332200312312.

It is a cyclic number.

It is not a de Polignac number, because 21321300223333 - 2¹³ = 21321300215141 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 (21321300223339) 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, 1158418 + ... + 6632083.

It is an arithmetic number, because the mean of its divisors is an integer number (1478715184620).

Almost surely, 2^{21321300223333} is an apocalyptic number.

It is an amenable number.

21321300223333 is a deficient number, since it is larger than the sum of its proper divisors (2338142730587).

21321300223333 is a wasteful number, since it uses less digits than its factorization.

21321300223333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7794788.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 21321300223333 its reverse (33332200312312), we get a palindrome (54653500535645).

The spelling of 21321300223333 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred million, two hundred twenty-three thousand, three hundred thirty-three".