12000020020 has 24 divisors (see below), whose sum is σ = 26012947968. Its totient is φ = 4645168800.

The previous prime is 12000020009. The next prime is 12000020029. The reversal of 12000020020 is 2002000021.

It is a happy number.

12000020020 is a modest number, since divided by 20020 gives 12000 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 12000019985 and 12000020012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000020029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9676816 + ... + 9678055.

It is an arithmetic number, because the mean of its divisors is an integer number (1083872832).

Almost surely, 2^12000020020 is an apocalyptic number.

12000020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12000020020 is an abundant number, since it is smaller than the sum of its proper divisors (14012927948).

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

12000020020 is a wasteful number, since it uses less digits than its factorization.

12000020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19354911 (or 19354909 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 12000020020 its reverse (2002000021), we get a palindrome (14002020041).

The spelling of 12000020020 in words is "twelve billion, twenty thousand, twenty".