11203421211 has 12 divisors (see below), whose sum is σ = 16255290688. Its totient is φ = 7435453104.

The previous prime is 11203421191. The next prime is 11203421219. The reversal of 11203421211 is 11212430211.

11203421211 is a `hidden beast` number, since 11 + 20 + 3 + 421 + 211 = 666.

11203421211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11203421211 - 2⁷ = 11203421083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11203421219) 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 11 ways as a sum of consecutive naturals, for example, 2789080 + ... + 2793093.

Almost surely, 2^11203421211 is an apocalyptic number.

11203421211 is a deficient number, since it is larger than the sum of its proper divisors (5051869477).

11203421211 is a wasteful number, since it uses less digits than its factorization.

11203421211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582402 (or 5582399 counting only the distinct ones).

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

Adding to 11203421211 its reverse (11212430211), we get a palindrome (22415851422).

The spelling of 11203421211 in words is "eleven billion, two hundred three million, four hundred twenty-one thousand, two hundred eleven".