11212120444 has 24 divisors (see below), whose sum is σ = 22453750368. Its totient is φ = 4798871040.

The previous prime is 11212120429. The next prime is 11212120463. The reversal of 11212120444 is 44402121211.

11212120444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 241789 + ... + 284404.

It is an arithmetic number, because the mean of its divisors is an integer number (935572932).

Almost surely, 2^11212120444 is an apocalyptic number.

11212120444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11212120444 is an abundant number, since it is smaller than the sum of its proper divisors (11241629924).

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

11212120444 is a wasteful number, since it uses less digits than its factorization.

11212120444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526965 (or 526963 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 11212120444 its reverse (44402121211), we get a palindrome (55614241655).

The spelling of 11212120444 in words is "eleven billion, two hundred twelve million, one hundred twenty thousand, four hundred forty-four".