211020010221200 has 120 divisors (see below), whose sum is σ = 513371408812200. Its totient is φ = 83345728942080.

The previous prime is 211020010221199. The next prime is 211020010221221. The reversal of 211020010221200 is 2122010020112.

It can be written as a sum of positive squares in 12 ways, for example, as 89449451203984 + 121570559017216 = 9457772^2 + 11025904^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22051466 + ... + 30138134.

It is an arithmetic number, because the mean of its divisors is an integer number (4278095073435).

Almost surely, 2^{211020010221200} is an apocalyptic number.

211020010221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211020010221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256685704406100).

211020010221200 is an abundant number, since it is smaller than the sum of its proper divisors (302351398591000).

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

211020010221200 is a wasteful number, since it uses less digits than its factorization.

211020010221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8087509 (or 8087498 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211020010221200 its reverse (2122010020112), we get a palindrome (213142020241312).

The spelling of 211020010221200 in words is "two hundred eleven trillion, twenty billion, ten million, two hundred twenty-one thousand, two hundred".