12123130 has 16 divisors (see below), whose sum is σ = 21983400. Its totient is φ = 4813312.

The previous prime is 12123107. The next prime is 12123151. The reversal of 12123130 is 3132121.

It can be written as a sum of positive squares in 4 ways, for example, as 6007401 + 6115729 = 2451^2 + 2473^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12123130.

It is an unprimeable number.

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, 3055 + ... + 5794.

Almost surely, 2^12123130 is an apocalyptic number.

12123130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12123130 is a deficient number, since it is larger than the sum of its proper divisors (9860270).

12123130 is a wasteful number, since it uses less digits than its factorization.

12123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8993.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12123130 is about 3481.8285425908. The cubic root of 12123130 is about 229.7232335692.

Adding to 12123130 its reverse (3132121), we get a palindrome (15255251).

The spelling of 12123130 in words is "twelve million, one hundred twenty-three thousand, one hundred thirty".