21213300002 has 16 divisors (see below), whose sum is σ = 31885926912. Its totient is φ = 10584675360.

The previous prime is 21213299999. The next prime is 21213300011. The reversal of 21213300002 is 20000331212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21213300002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5138063 + ... + 5142189.

It is an arithmetic number, because the mean of its divisors is an integer number (1992870432).

Almost surely, 2^21213300002 is an apocalyptic number.

21213300002 is a deficient number, since it is larger than the sum of its proper divisors (10672626910).

21213300002 is a wasteful number, since it uses less digits than its factorization.

21213300002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8833.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21213300002 its reverse (20000331212), we get a palindrome (41213631214).

The spelling of 21213300002 in words is "twenty-one billion, two hundred thirteen million, three hundred thousand, two".