211244311144 has 8 divisors (see below), whose sum is σ = 396083083410. Its totient is φ = 105622155568.

The previous prime is 211244311129. The next prime is 211244311163. The reversal of 211244311144 is 441113442112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 135254772900 + 75989538244 = 367770^2 + 275662^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13202769439 + ... + 13202769454.

Almost surely, 2^211244311144 is an apocalyptic number.

It is an amenable number.

211244311144 is a deficient number, since it is larger than the sum of its proper divisors (184838772266).

211244311144 is a wasteful number, since it uses less digits than its factorization.

211244311144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26405538899 (or 26405538895 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

Adding to 211244311144 its reverse (441113442112), we get a palindrome (652357753256).

The spelling of 211244311144 in words is "two hundred eleven billion, two hundred forty-four million, three hundred eleven thousand, one hundred forty-four".