211444221412 has 12 divisors (see below), whose sum is σ = 379052445996. Its totient is φ = 103143522560.

The previous prime is 211444221379. The next prime is 211444221413. The reversal of 211444221412 is 214122444112.

211444221412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2845582336 + 208598639076 = 53344^2 + 456726^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (211444221413) 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, 644646853 + ... + 644647180.

It is an arithmetic number, because the mean of its divisors is an integer number (31587703833).

Almost surely, 2^211444221412 is an apocalyptic number.

It is an amenable number.

211444221412 is a deficient number, since it is larger than the sum of its proper divisors (167608224584).

211444221412 is a wasteful number, since it uses less digits than its factorization.

211444221412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289294078 (or 1289294076 counting only the distinct ones).

The product of its digits is 4096, while the sum is 28.

Adding to 211444221412 its reverse (214122444112), we get a palindrome (425566665524).

The spelling of 211444221412 in words is "two hundred eleven billion, four hundred forty-four million, two hundred twenty-one thousand, four hundred twelve".