11103121091 has 8 divisors (see below), whose sum is σ = 11188522800. Its totient is φ = 11017798560.

The previous prime is 11103121027. The next prime is 11103121121. The reversal of 11103121091 is 19012130111.

It is a happy number.

11103121091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11103121091 - 2⁶ = 11103121027 is a prime.

It is a super-2 number, since 2×11103121091² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11103121291) 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 7 ways as a sum of consecutive naturals, for example, 278945 + ... + 316253.

It is an arithmetic number, because the mean of its divisors is an integer number (1398565350).

Almost surely, 2^11103121091 is an apocalyptic number.

11103121091 is a deficient number, since it is larger than the sum of its proper divisors (85401709).

11103121091 is a wasteful number, since it uses less digits than its factorization.

11103121091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39589.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 11103121091 in words is "eleven billion, one hundred three million, one hundred twenty-one thousand, ninety-one".