211020210200 has 48 divisors (see below), whose sum is σ = 499879032480. Its totient is φ = 82815474560.

The previous prime is 211020210161. The next prime is 211020210211. The reversal of 211020210200 is 2012020112.

It is a happy number.

It is a super-2 number, since 2×211020210200² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9943184 + ... + 9964383.

It is an arithmetic number, because the mean of its divisors is an integer number (10414146510).

Almost surely, 2^211020210200 is an apocalyptic number.

211020210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020210200 is an abundant number, since it is smaller than the sum of its proper divisors (288858822280).

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

211020210200 is a wasteful number, since it uses less digits than its factorization.

211020210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19907636 (or 19907627 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 211020210200 its reverse (2012020112), we get a palindrome (213032230312).

The spelling of 211020210200 in words is "two hundred eleven billion, twenty million, two hundred ten thousand, two hundred".