11103122421 has 24 divisors (see below), whose sum is σ = 16218768384. Its totient is φ = 7319046240.

The previous prime is 11103122413. The next prime is 11103122423. The reversal of 11103122421 is 12422130111.

11103122421 is a `hidden beast` number, since 1 + 110 + 312 + 242 + 1 = 666.

It is not a de Polignac number, because 11103122421 - 2³ = 11103122413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11103122394 and 11103122403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103122423) 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 23 ways as a sum of consecutive naturals, for example, 267735 + ... + 306411.

It is an arithmetic number, because the mean of its divisors is an integer number (675782016).

Almost surely, 2^11103122421 is an apocalyptic number.

It is an amenable number.

11103122421 is a deficient number, since it is larger than the sum of its proper divisors (5115645963).

11103122421 is a wasteful number, since it uses less digits than its factorization.

11103122421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39041 (or 39038 counting only the distinct ones).

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

Adding to 11103122421 its reverse (12422130111), we get a palindrome (23525252532).

The spelling of 11103122421 in words is "eleven billion, one hundred three million, one hundred twenty-two thousand, four hundred twenty-one".