211221110210200 has 24 divisors (see below), whose sum is σ = 491089081239180. Its totient is φ = 84488444084000.

The previous prime is 211221110210197. The next prime is 211221110210203. The reversal of 211221110210200 is 2012011122112.

It is an interprime number because it is at equal distance from previous prime (211221110210197) and next prime (211221110210203).

It is a super-2 number, since 2×211221110210200² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221110210203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 528052775326 + ... + 528052775725.

Almost surely, 2^{211221110210200} is an apocalyptic number.

211221110210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211221110210200 is an abundant number, since it is smaller than the sum of its proper divisors (279867971028980).

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

211221110210200 is a wasteful number, since it uses less digits than its factorization.

211221110210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056105551067 (or 1056105551058 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211221110210200 its reverse (2012011122112), we get a palindrome (213233121332312).

The spelling of 211221110210200 in words is "two hundred eleven trillion, two hundred twenty-one billion, one hundred ten million, two hundred ten thousand, two hundred".