211444004440 has 64 divisors (see below), whose sum is σ = 491665930560. Its totient is φ = 81784442880.

The previous prime is 211444004419. The next prime is 211444004441. The reversal of 211444004440 is 44400444112.

211444004440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 211444004399 and 211444004408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211444004441) 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, 385164 + ... + 755803.

It is an arithmetic number, because the mean of its divisors is an integer number (7682280165).

Almost surely, 2^211444004440 is an apocalyptic number.

211444004440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211444004440 is an abundant number, since it is smaller than the sum of its proper divisors (280221926120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211444004440 is a wasteful number, since it uses less digits than its factorization.

211444004440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141132 (or 1141128 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 211444004440 its reverse (44400444112), we get a palindrome (255844448552).

The spelling of 211444004440 in words is "two hundred eleven billion, four hundred forty-four million, four thousand, four hundred forty".