21333002212 has 12 divisors (see below), whose sum is σ = 37348649856. Its totient is φ = 10661959400.

The previous prime is 21333002203. The next prime is 21333002213. The reversal of 21333002212 is 21220033312.

It is a self number, because there is not a number n which added to its sum of digits gives 21333002212.

It is not an unprimeable number, because it can be changed into a prime (21333002213) 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, 1124848 + ... + 1143655.

It is an arithmetic number, because the mean of its divisors is an integer number (3112387488).

Almost surely, 2^21333002212 is an apocalyptic number.

It is an amenable number.

21333002212 is a deficient number, since it is larger than the sum of its proper divisors (16015647644).

21333002212 is a wasteful number, since it uses less digits than its factorization.

21333002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270858 (or 2270856 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21333002212 its reverse (21220033312), we get a palindrome (42553035524).

The spelling of 21333002212 in words is "twenty-one billion, three hundred thirty-three million, two thousand, two hundred twelve".