211131244105 has 16 divisors (see below), whose sum is σ = 253653470784. Its totient is φ = 168707782080.

The previous prime is 211131244097. The next prime is 211131244123. The reversal of 211131244105 is 501442131112.

It is a happy number.

It is not a de Polignac number, because 211131244105 - 2³ = 211131244097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211131244105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30388242 + ... + 30395188.

It is an arithmetic number, because the mean of its divisors is an integer number (15853341924).

Almost surely, 2^211131244105 is an apocalyptic number.

It is an amenable number.

211131244105 is a deficient number, since it is larger than the sum of its proper divisors (42522226679).

211131244105 is a wasteful number, since it uses less digits than its factorization.

211131244105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13176.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 211131244105 its reverse (501442131112), we get a palindrome (712573375217).

The spelling of 211131244105 in words is "two hundred eleven billion, one hundred thirty-one million, two hundred forty-four thousand, one hundred five".