21322212200 has 48 divisors (see below), whose sum is σ = 50727050880. Its totient is φ = 8330535360.

The previous prime is 21322212187. The next prime is 21322212211. The reversal of 21322212200 is 221222312.

It is an unprimeable number.

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, 1231064 + ... + 1248263.

It is an arithmetic number, because the mean of its divisors is an integer number (1056813560).

Almost surely, 2^21322212200 is an apocalyptic number.

21322212200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21322212200 is an abundant number, since it is smaller than the sum of its proper divisors (29404838680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21322212200 is a wasteful number, since it uses less digits than its factorization.

21322212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479386 (or 2479377 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21322212200 its reverse (221222312), we get a palindrome (21543434512).

The spelling of 21322212200 in words is "twenty-one billion, three hundred twenty-two million, two hundred twelve thousand, two hundred".