11211240140 has 12 divisors (see below), whose sum is σ = 23543604336. Its totient is φ = 4484496048.

The previous prime is 11211240119. The next prime is 11211240191. The reversal of 11211240140 is 4104211211.

It is an unprimeable number.

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, 280280984 + ... + 280281023.

It is an arithmetic number, because the mean of its divisors is an integer number (1961967028).

Almost surely, 2^11211240140 is an apocalyptic number.

11211240140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211240140 is an abundant number, since it is smaller than the sum of its proper divisors (12332364196).

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

11211240140 is a wasteful number, since it uses less digits than its factorization.

11211240140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560562016 (or 560562014 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11211240140 its reverse (4104211211), we get a palindrome (15315451351).

The spelling of 11211240140 in words is "eleven billion, two hundred eleven million, two hundred forty thousand, one hundred forty".