212021110211 has 4 divisors (see below), whose sum is σ = 212589531792. Its totient is φ = 211452688632.

The previous prime is 212021110157. The next prime is 212021110229. The reversal of 212021110211 is 112011120212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212021110211 - 2²² = 212016915907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021110711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284210231 + ... + 284210976.

It is an arithmetic number, because the mean of its divisors is an integer number (53147382948).

Almost surely, 2^212021110211 is an apocalyptic number.

212021110211 is a deficient number, since it is larger than the sum of its proper divisors (568421581).

212021110211 is an equidigital number, since it uses as much as digits as its factorization.

212021110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568421580.

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

Adding to 212021110211 its reverse (112011120212), we get a palindrome (324032230423).

The spelling of 212021110211 in words is "two hundred twelve billion, twenty-one million, one hundred ten thousand, two hundred eleven".