12210120 has 96 divisors (see below), whose sum is σ = 42751800. Its totient is φ = 3004416.

The previous prime is 12210119. The next prime is 12210137. The reversal of 12210120 is 2101221.

It can be written as a sum of positive squares in 4 ways, for example, as 7518564 + 4691556 = 2742^2 + 2166^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

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, 3376 + ... + 5984.

Almost surely, 2^12210120 is an apocalyptic number.

12210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12210120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21375900).

12210120 is an abundant number, since it is smaller than the sum of its proper divisors (30541680).

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

12210120 is a wasteful number, since it uses less digits than its factorization.

12210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639 (or 2632 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12210120 is about 3494.2982128033. The cubic root of 12210120 is about 230.2713872765.

Adding to 12210120 its reverse (2101221), we get a palindrome (14311341).

The spelling of 12210120 in words is "twelve million, two hundred ten thousand, one hundred twenty".