21200210022 has 16 divisors (see below), whose sum is σ = 42481809072. Its totient is φ = 7053171840.

The previous prime is 21200209993. The next prime is 21200210029. The reversal of 21200210022 is 22001200212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200210029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3387823 + ... + 3394074.

It is an arithmetic number, because the mean of its divisors is an integer number (2655113067).

Almost surely, 2^21200210022 is an apocalyptic number.

21200210022 is an abundant number, since it is smaller than the sum of its proper divisors (21281599050).

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

21200210022 is a wasteful number, since it uses less digits than its factorization.

21200210022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6782423.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21200210022 its reverse (22001200212), we get a palindrome (43201410234).

The spelling of 21200210022 in words is "twenty-one billion, two hundred million, two hundred ten thousand, twenty-two".