11212344240 has 80 divisors (see below), whose sum is σ = 35956850400. Its totient is φ = 2886854656.

The previous prime is 11212344197. The next prime is 11212344263. The reversal of 11212344240 is 4244321211.

11212344240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×11212344240² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 11212344240.

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, 798525 + ... + 812444.

It is an arithmetic number, because the mean of its divisors is an integer number (449460630).

Almost surely, 2^11212344240 is an apocalyptic number.

11212344240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212344240 is an abundant number, since it is smaller than the sum of its proper divisors (24744506160).

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

11212344240 is a wasteful number, since it uses less digits than its factorization.

11212344240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611014 (or 1611008 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 11212344240 its reverse (4244321211), we get a palindrome (15456665451).

The spelling of 11212344240 in words is "eleven billion, two hundred twelve million, three hundred forty-four thousand, two hundred forty".