12020220020 has 12 divisors (see below), whose sum is σ = 25242462084. Its totient is φ = 4808088000.

The previous prime is 12020220001. The next prime is 12020220029. The reversal of 12020220020 is 2002202021.

It can be written as a sum of positive squares in 2 ways, for example, as 9253670416 + 2766549604 = 96196^2 + 52598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12020219983 and 12020220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020220029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300505481 + ... + 300505520.

It is an arithmetic number, because the mean of its divisors is an integer number (2103538507).

Almost surely, 2^12020220020 is an apocalyptic number.

12020220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020220020 is an abundant number, since it is smaller than the sum of its proper divisors (13222242064).

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

12020220020 is a wasteful number, since it uses less digits than its factorization.

12020220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601011010 (or 601011008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 12020220020 its reverse (2002202021), we get a palindrome (14022422041).

The spelling of 12020220020 in words is "twelve billion, twenty million, two hundred twenty thousand, twenty".