11121213240 has 96 divisors (see below), whose sum is σ = 36157212000. Its totient is φ = 2964568320.

The previous prime is 11121213163. The next prime is 11121213241. The reversal of 11121213240 is 4231212111.

11121213240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121213241) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1634245 + ... + 1641035.

It is an arithmetic number, because the mean of its divisors is an integer number (376637625).

Almost surely, 2^11121213240 is an apocalyptic number.

11121213240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121213240 is an abundant number, since it is smaller than the sum of its proper divisors (25035998760).

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

11121213240 is a wasteful number, since it uses less digits than its factorization.

11121213240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11357 (or 11350 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11121213240 its reverse (4231212111), we get a palindrome (15352425351).

The spelling of 11121213240 in words is "eleven billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred forty".