12126210 has 32 divisors (see below), whose sum is σ = 29194560. Its totient is φ = 3223488.

The previous prime is 12126197. The next prime is 12126223. The reversal of 12126210 is 1262121.

It is an interprime number because it is at equal distance from previous prime (12126197) and next prime (12126223).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12126210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18244 + ... + 18896.

It is an arithmetic number, because the mean of its divisors is an integer number (912330).

Almost surely, 2^12126210 is an apocalyptic number.

12126210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12126210 is an abundant number, since it is smaller than the sum of its proper divisors (17068350).

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

12126210 is a wasteful number, since it uses less digits than its factorization.

12126210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 12126210 is about 3482.2708108359. The cubic root of 12126210 is about 229.7426864016.

Adding to 12126210 its reverse (1262121), we get a palindrome (13388331).

The spelling of 12126210 in words is "twelve million, one hundred twenty-six thousand, two hundred ten".