211210202120200 has 24 divisors (see below), whose sum is σ = 491063719929930. Its totient is φ = 84484080848000.

The previous prime is 211210202120191. The next prime is 211210202120261. The reversal of 211210202120200 is 2021202012112.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 174073878014436 + 37136324105764 = 13193706^2 + 6093958^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 528025505101 + ... + 528025505500.

Almost surely, 2^{211210202120200} is an apocalyptic number.

211210202120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210202120200 is an abundant number, since it is smaller than the sum of its proper divisors (279853517809730).

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

211210202120200 is a wasteful number, since it uses less digits than its factorization.

211210202120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056051010617 (or 1056051010608 counting only the distinct ones).

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

Adding to 211210202120200 its reverse (2021202012112), we get a palindrome (213231404132312).

The spelling of 211210202120200 in words is "two hundred eleven trillion, two hundred ten billion, two hundred two million, one hundred twenty thousand, two hundred".