212101100211 has 128 divisors (see below), whose sum is σ = 384799113216. Its totient is φ = 100350420480.

The previous prime is 212101100209. The next prime is 212101100227. The reversal of 212101100211 is 112001101212.

It is not a de Polignac number, because 212101100211 - 2¹ = 212101100209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212101100111) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 89004726 + ... + 89007108.

It is an arithmetic number, because the mean of its divisors is an integer number (3006243072).

Almost surely, 2^212101100211 is an apocalyptic number.

212101100211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212101100211 is a deficient number, since it is larger than the sum of its proper divisors (172698013005).

212101100211 is a wasteful number, since it uses less digits than its factorization.

212101100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 212101100211 its reverse (112001101212), we get a palindrome (324102201423).

The spelling of 212101100211 in words is "two hundred twelve billion, one hundred one million, one hundred thousand, two hundred eleven".