11151220211340 has 48 divisors (see below), whose sum is σ = 34061909011200. Its totient is φ = 2703326111680.

The previous prime is 11151220211273. The next prime is 11151220211357. The reversal of 11151220211340 is 4311202215111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11151220211340.

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 15 ways as a sum of consecutive naturals, for example, 8447893440 + ... + 8447894759.

It is an arithmetic number, because the mean of its divisors is an integer number (709623104400).

Almost surely, 2^{11151220211340} is an apocalyptic number.

11151220211340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11151220211340 is an abundant number, since it is smaller than the sum of its proper divisors (22910688799860).

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

11151220211340 is a wasteful number, since it uses less digits than its factorization.

11151220211340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16895788222 (or 16895788220 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 11151220211340 its reverse (4311202215111), we get a palindrome (15462422426451).

The spelling of 11151220211340 in words is "eleven trillion, one hundred fifty-one billion, two hundred twenty million, two hundred eleven thousand, three hundred forty".