21213322010 has 32 divisors (see below), whose sum is σ = 40332390912. Its totient is φ = 8020635840.

The previous prime is 21213321959. The next prime is 21213322051. The reversal of 21213322010 is 1022331212.

It is a self number, because there is not a number n which added to its sum of digits gives 21213322010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782369 + ... + 809028.

It is an arithmetic number, because the mean of its divisors is an integer number (1260387216).

Almost surely, 2^21213322010 is an apocalyptic number.

21213322010 is a deficient number, since it is larger than the sum of its proper divisors (19119068902).

21213322010 is a wasteful number, since it uses less digits than its factorization.

21213322010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591478.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21213322010 its reverse (1022331212), we get a palindrome (22235653222).

The spelling of 21213322010 in words is "twenty-one billion, two hundred thirteen million, three hundred twenty-two thousand, ten".