221021021210200 has 48 divisors (see below), whose sum is σ = 515426363514360. Its totient is φ = 88141313568000.

The previous prime is 221021021210167. The next prime is 221021021210279. The reversal of 221021021210200 is 2012120120122.

It is a happy number.

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, 1669276861 + ... + 1669409260.

Almost surely, 2^{221021021210200} is an apocalyptic number.

221021021210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221021021210200 is an abundant number, since it is smaller than the sum of its proper divisors (294405342304160).

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

221021021210200 is a wasteful number, since it uses less digits than its factorization.

221021021210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338686468 (or 3338686459 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221021021210200 its reverse (2012120120122), we get a palindrome (223033141330322).

The spelling of 221021021210200 in words is "two hundred twenty-one trillion, twenty-one billion, twenty-one million, two hundred ten thousand, two hundred".