212120010211 has 4 divisors (see below), whose sum is σ = 212121105624. Its totient is φ = 212118914800.

The previous prime is 212120010173. The next prime is 212120010251. The reversal of 212120010211 is 112010021212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212120010211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212120010191 and 212120010200.

It is not an unprimeable number, because it can be changed into a prime (212120010251) 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, 170770 + ... + 673351.

It is an arithmetic number, because the mean of its divisors is an integer number (53030276406).

Almost surely, 2^212120010211 is an apocalyptic number.

212120010211 is a deficient number, since it is larger than the sum of its proper divisors (1095413).

212120010211 is an equidigital number, since it uses as much as digits as its factorization.

212120010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095412.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212120010211 its reverse (112010021212), we get a palindrome (324130031423).

The spelling of 212120010211 in words is "two hundred twelve billion, one hundred twenty million, ten thousand, two hundred eleven".