21022122210200 has 48 divisors (see below), whose sum is σ = 49021468225080. Its totient is φ = 8383896783360.

The previous prime is 21022122210149. The next prime is 21022122210311. The reversal of 21022122210200 is 201222122012.

It is a happy number.

It is a congruent number.

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, 155883062 + ... + 156017861.

Almost surely, 2^{21022122210200} is an apocalyptic number.

21022122210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21022122210200 is an abundant number, since it is smaller than the sum of its proper divisors (27999346014880).

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

21022122210200 is a wasteful number, since it uses less digits than its factorization.

21022122210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311901276 (or 311901267 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21022122210200 its reverse (201222122012), we get a palindrome (21223344332212).

The spelling of 21022122210200 in words is "twenty-one trillion, twenty-two billion, one hundred twenty-two million, two hundred ten thousand, two hundred".