21300012333 has 12 divisors (see below), whose sum is σ = 31598216988. Its totient is φ = 13816224000.

The previous prime is 21300012329. The next prime is 21300012341. The reversal of 21300012333 is 33321000312.

21300012333 is a `hidden beast` number, since 21 + 300 + 0 + 12 + 333 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16586091369 + 4713920964 = 128787^2 + 68658^2 .

It is not a de Polignac number, because 21300012333 - 2² = 21300012329 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300012733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31981668 + ... + 31982333.

It is an arithmetic number, because the mean of its divisors is an integer number (2633184749).

Almost surely, 2^21300012333 is an apocalyptic number.

It is an amenable number.

21300012333 is a deficient number, since it is larger than the sum of its proper divisors (10298204655).

21300012333 is a wasteful number, since it uses less digits than its factorization.

21300012333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63964044 (or 63964041 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21300012333 its reverse (33321000312), we get a palindrome (54621012645).

The spelling of 21300012333 in words is "twenty-one billion, three hundred million, twelve thousand, three hundred thirty-three".