211221001110200 has 48 divisors (see below), whose sum is σ = 512440515748080. Its totient is φ = 80814991727360.

The previous prime is 211221001110199. The next prime is 211221001110209. The reversal of 211221001110200 is 2011100122112.

It is a super-2 number, since 2×211221001110200² (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 (211221001110209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22958799869 + ... + 22958809068.

It is an arithmetic number, because the mean of its divisors is an integer number (10675844078085).

Almost surely, 2^{211221001110200} is an apocalyptic number.

211221001110200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211221001110200 is an abundant number, since it is smaller than the sum of its proper divisors (301219514637880).

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

211221001110200 is a wasteful number, since it uses less digits than its factorization.

211221001110200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45917608976 (or 45917608967 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211221001110200 its reverse (2011100122112), we get a palindrome (213232101232312).

The spelling of 211221001110200 in words is "two hundred eleven trillion, two hundred twenty-one billion, one million, one hundred ten thousand, two hundred".