12102010020 has 72 divisors (see below), whose sum is σ = 37893623040. Its totient is φ = 3123097920.

The previous prime is 12102010009. The next prime is 12102010069. The reversal of 12102010020 is 2001020121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12102009984 and 12102010011.

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, 1078830 + ... + 1089989.

It is an arithmetic number, because the mean of its divisors is an integer number (526300320).

Almost surely, 2^12102010020 is an apocalyptic number.

12102010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102010020 is an abundant number, since it is smaller than the sum of its proper divisors (25791613020).

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

12102010020 is a wasteful number, since it uses less digits than its factorization.

12102010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168865 (or 2168860 counting only the distinct ones).

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

Adding to 12102010020 its reverse (2001020121), we get a palindrome (14103030141).

The spelling of 12102010020 in words is "twelve billion, one hundred two million, ten thousand, twenty".