12102422420 has 36 divisors (see below), whose sum is σ = 27935597172. Its totient is φ = 4400880000.

The previous prime is 12102422411. The next prime is 12102422447. The reversal of 12102422420 is 2422420121.

12102422420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9344702224 + 2757720196 = 96668^2 + 52514^2 .

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12102422392 and 12102422401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2498081 + ... + 2502920.

Almost surely, 2^12102422420 is an apocalyptic number.

12102422420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102422420 is an abundant number, since it is smaller than the sum of its proper divisors (15833174752).

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

12102422420 is a wasteful number, since it uses less digits than its factorization.

12102422420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001032 (or 5001019 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12102422420 its reverse (2422420121), we get a palindrome (14524842541).

The spelling of 12102422420 in words is "twelve billion, one hundred two million, four hundred twenty-two thousand, four hundred twenty".