12010020012 has 30 divisors (see below), whose sum is σ = 31396565508. Its totient is φ = 4003339896.

The previous prime is 12010019993. The next prime is 12010020047. The reversal of 12010020012 is 21002001021.

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 = 12010019976 and 12010020003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18533658 + ... + 18534305.

Almost surely, 2^12010020012 is an apocalyptic number.

12010020012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12010020012 is an abundant number, since it is smaller than the sum of its proper divisors (19386545496).

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

12010020012 is a wasteful number, since it uses less digits than its factorization.

12010020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37067979 (or 37067968 counting only the distinct ones).

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

Adding to 12010020012 its reverse (21002001021), we get a palindrome (33012021033).

The spelling of 12010020012 in words is "twelve billion, ten million, twenty thousand, twelve".