12120432210 has 96 divisors (see below), whose sum is σ = 32105913840. Its totient is φ = 3171571200.

The previous prime is 12120432209. The next prime is 12120432227. The reversal of 12120432210 is 1223402121.

It is a happy number.

12120432210 is a `hidden beast` number, since 1 + 2 + 1 + 20 + 432 + 210 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 45279441 + 12075152769 = 6729^2 + 109887^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2528496 + ... + 2533284.

Almost surely, 2^12120432210 is an apocalyptic number.

12120432210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12120432210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16052956920).

12120432210 is an abundant number, since it is smaller than the sum of its proper divisors (19985481630).

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

12120432210 is a wasteful number, since it uses less digits than its factorization.

12120432210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5324 (or 5321 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12120432210 its reverse (1223402121), we get a palindrome (13343834331).

The spelling of 12120432210 in words is "twelve billion, one hundred twenty million, four hundred thirty-two thousand, two hundred ten".