103511121 has 24 divisors (see below), whose sum is σ = 163385664. Its totient is φ = 57099840.

The previous prime is 103511117. The next prime is 103511123. The reversal of 103511121 is 121115301.

It is not a de Polignac number, because 103511121 - 2² = 103511117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103511121.

It is not an unprimeable number, because it can be changed into a prime (103511123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14731 + ... + 20591.

It is an arithmetic number, because the mean of its divisors is an integer number (6807736).

Almost surely, 2^103511121 is an apocalyptic number.

It is an amenable number.

103511121 is a deficient number, since it is larger than the sum of its proper divisors (59874543).

103511121 is an equidigital number, since it uses as much as digits as its factorization.

103511121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5929 (or 5900 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 103511121 is about 10174.0415273381. The cubic root of 103511121 is about 469.5289092927.

Adding to 103511121 its reverse (121115301), we get a palindrome (224626422).

The spelling of 103511121 in words is "one hundred three million, five hundred eleven thousand, one hundred twenty-one".