211210022011 has 4 divisors (see below), whose sum is σ = 216121883032. Its totient is φ = 206298160992.

The previous prime is 211210021999. The next prime is 211210022017. The reversal of 211210022011 is 110220012112.

211210022011 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 211210022011 - 2¹¹ = 211210019963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211210021982 and 211210022000.

It is not an unprimeable number, because it can be changed into a prime (211210022017) 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, 2455930446 + ... + 2455930531.

It is an arithmetic number, because the mean of its divisors is an integer number (54030470758).

Almost surely, 2^211210022011 is an apocalyptic number.

211210022011 is a deficient number, since it is larger than the sum of its proper divisors (4911861021).

211210022011 is an equidigital number, since it uses as much as digits as its factorization.

211210022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4911861020.

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

Adding to 211210022011 its reverse (110220012112), we get a palindrome (321430034123).

The spelling of 211210022011 in words is "two hundred eleven billion, two hundred ten million, twenty-two thousand, eleven".