12102323220 has 216 divisors, whose sum is σ = 41845658400. Its totient is φ = 2822107392.

The previous prime is 12102323197. The next prime is 12102323221. The reversal of 12102323220 is 2232320121.

12102323220 is a `hidden beast` number, since 1 + 210 + 232 + 3 + 220 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 12102323193 and 12102323202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102323221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 567511 + ... + 588449.

It is an arithmetic number, because the mean of its divisors is an integer number (193729900).

Almost surely, 2^12102323220 is an apocalyptic number.

12102323220 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 12102323220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20922829200).

12102323220 is an abundant number, since it is smaller than the sum of its proper divisors (29743335180).

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

12102323220 is a wasteful number, since it uses less digits than its factorization.

12102323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20999 (or 20981 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12102323220 its reverse (2232320121), we get a palindrome (14334643341).

The spelling of 12102323220 in words is "twelve billion, one hundred two million, three hundred twenty-three thousand, two hundred twenty".