12102130 has 32 divisors (see below), whose sum is σ = 23238576. Its totient is φ = 4521984.

The previous prime is 12102127. The next prime is 12102133. The reversal of 12102130 is 3120121.

It is an interprime number because it is at equal distance from previous prime (12102127) and next prime (12102133).

It can be written as a sum of positive squares in 8 ways, for example, as 8720209 + 3381921 = 2953^2 + 1839^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12102133) 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 15 ways as a sum of consecutive naturals, for example, 43552 + ... + 43828.

Almost surely, 2^12102130 is an apocalyptic number.

12102130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12102130 is a deficient number, since it is larger than the sum of its proper divisors (11136446).

12102130 is a wasteful number, since it uses less digits than its factorization.

12102130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

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

The square root of 12102130 is about 3478.8115786860. The cubic root of 12102130 is about 229.5905127258.

Adding to 12102130 its reverse (3120121), we get a palindrome (15222251).

Subtracting from 12102130 its reverse (3120121), we obtain a square (8982009 = 2997²).

The spelling of 12102130 in words is "twelve million, one hundred two thousand, one hundred thirty".