21442551210200 has 48 divisors (see below), whose sum is σ = 49854860844360. Its totient is φ = 8576860608000.

The previous prime is 21442551210167. The next prime is 21442551210229. The reversal of 21442551210200 is 201215524412.

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, 10062560 + ... + 12005840.

Almost surely, 2^{21442551210200} is an apocalyptic number.

21442551210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21442551210200 is an abundant number, since it is smaller than the sum of its proper divisors (28412309634160).

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

21442551210200 is a wasteful number, since it uses less digits than its factorization.

21442551210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998468 (or 1998459 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 21442551210200 its reverse (201215524412), we get a palindrome (21643766734612).

The spelling of 21442551210200 in words is "twenty-one trillion, four hundred forty-two billion, five hundred fifty-one million, two hundred ten thousand, two hundred".