21002112333 has 12 divisors (see below), whose sum is σ = 30463318080. Its totient is φ = 13942823496.

The previous prime is 21002112277. The next prime is 21002112343. The reversal of 21002112333 is 33321120012.

It is not a de Polignac number, because 21002112333 - 2¹⁶ = 21002046797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002112343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4879791 + ... + 4884092.

It is an arithmetic number, because the mean of its divisors is an integer number (2538609840).

Almost surely, 2^21002112333 is an apocalyptic number.

It is an amenable number.

21002112333 is a deficient number, since it is larger than the sum of its proper divisors (9461205747).

21002112333 is a wasteful number, since it uses less digits than its factorization.

21002112333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9764128 (or 9764125 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21002112333 its reverse (33321120012), we get a palindrome (54323232345).

The spelling of 21002112333 in words is "twenty-one billion, two million, one hundred twelve thousand, three hundred thirty-three".