12103120 has 20 divisors (see below), whose sum is σ = 28139940. Its totient is φ = 4841216.

The previous prime is 12103109. The next prime is 12103123. The reversal of 12103120 is 2130121.

12103120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7333264 + 4769856 = 2708^2 + 2184^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12103097 and 12103106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75565 + ... + 75724.

It is an arithmetic number, because the mean of its divisors is an integer number (1406997).

Almost surely, 2^12103120 is an apocalyptic number.

12103120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103120 is an abundant number, since it is smaller than the sum of its proper divisors (16036820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12103120 is a wasteful number, since it uses less digits than its factorization.

12103120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151302 (or 151296 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12103120 is about 3478.9538657476. The cubic root of 12103120 is about 229.5967730125.

Adding to 12103120 its reverse (2130121), we get a palindrome (14233241).

The spelling of 12103120 in words is "twelve million, one hundred three thousand, one hundred twenty".