211122211011 has 16 divisors (see below), whose sum is σ = 290377910784. Its totient is φ = 136340842464.

The previous prime is 211122211009. The next prime is 211122211031. The reversal of 211122211011 is 110112221112.

It is a happy number.

211122211011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211122211011 - 2¹ = 211122211009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211122211031) 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 15 ways as a sum of consecutive naturals, for example, 4164235 + ... + 4214628.

It is an arithmetic number, because the mean of its divisors is an integer number (18148619424).

Almost surely, 2^211122211011 is an apocalyptic number.

211122211011 is a deficient number, since it is larger than the sum of its proper divisors (79255699773).

211122211011 is a wasteful number, since it uses less digits than its factorization.

211122211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8379130.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211122211011 its reverse (110112221112), we get a palindrome (321234432123).

The spelling of 211122211011 in words is "two hundred eleven billion, one hundred twenty-two million, two hundred eleven thousand, eleven".