21223110200 has 48 divisors (see below), whose sum is σ = 51940779000. Its totient is φ = 8042440320.

The previous prime is 21223110191. The next prime is 21223110211. The reversal of 21223110200 is 201132212.

It is a happy number.

It is a super-2 number, since 2×21223110200² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2788715 + ... + 2796314.

Almost surely, 2^21223110200 is an apocalyptic number.

21223110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21223110200 is an abundant number, since it is smaller than the sum of its proper divisors (30717668800).

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

21223110200 is a wasteful number, since it uses less digits than its factorization.

21223110200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5585064 (or 5585055 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21223110200 its reverse (201132212), we get a palindrome (21424242412).

The spelling of 21223110200 in words is "twenty-one billion, two hundred twenty-three million, one hundred ten thousand, two hundred".