11100321243 has 20 divisors (see below), whose sum is σ = 18089413848. Its totient is φ = 6727466880.

The previous prime is 11100321233. The next prime is 11100321247. The reversal of 11100321243 is 34212300111.

11100321243 is a `hidden beast` number, since 1 + 1 + 100 + 321 + 243 = 666.

It is not a de Polignac number, because 11100321243 - 2¹³ = 11100313051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11100321247) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 6228246 + ... + 6230027.

Almost surely, 2^11100321243 is an apocalyptic number.

11100321243 is a deficient number, since it is larger than the sum of its proper divisors (6989092605).

11100321243 is a wasteful number, since it uses less digits than its factorization.

11100321243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12458296 (or 12458287 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11100321243 its reverse (34212300111), we get a palindrome (45312621354).

The spelling of 11100321243 in words is "eleven billion, one hundred million, three hundred twenty-one thousand, two hundred forty-three".