212120210011 has 4 divisors (see below), whose sum is σ = 212552227224. Its totient is φ = 211688192800.

The previous prime is 212120210009. The next prime is 212120210017. The reversal of 212120210011 is 110012021212.

212120210011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212120210011 - 2¹ = 212120210009 is a prime.

It is a super-2 number, since 2×212120210011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212120209973 and 212120210000.

It is not an unprimeable number, because it can be changed into a prime (212120210017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216007870 + ... + 216008851.

It is an arithmetic number, because the mean of its divisors is an integer number (53138056806).

Almost surely, 2^212120210011 is an apocalyptic number.

212120210011 is a deficient number, since it is larger than the sum of its proper divisors (432017213).

212120210011 is an equidigital number, since it uses as much as digits as its factorization.

212120210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432017212.

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

Adding to 212120210011 its reverse (110012021212), we get a palindrome (322132231223).

The spelling of 212120210011 in words is "two hundred twelve billion, one hundred twenty million, two hundred ten thousand, eleven".