11103135421 has 32 divisors (see below), whose sum is σ = 13783004928. Its totient is φ = 8726261760.

The previous prime is 11103135403. The next prime is 11103135427. The reversal of 11103135421 is 12453130111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11103135421 - 2¹⁷ = 11103004349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11103135392 and 11103135401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103135427) 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 31 ways as a sum of consecutive naturals, for example, 5038906 + ... + 5041108.

It is an arithmetic number, because the mean of its divisors is an integer number (430718904).

Almost surely, 2^11103135421 is an apocalyptic number.

It is an amenable number.

11103135421 is a deficient number, since it is larger than the sum of its proper divisors (2679869507).

11103135421 is a wasteful number, since it uses less digits than its factorization.

11103135421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 11103135421 its reverse (12453130111), we get a palindrome (23556265532).

The spelling of 11103135421 in words is "eleven billion, one hundred three million, one hundred thirty-five thousand, four hundred twenty-one".