12201020200020 has 24 divisors (see below), whose sum is σ = 34162856560224. Its totient is φ = 3253605386656.

The previous prime is 12201020200003. The next prime is 12201020200139. The reversal of 12201020200020 is 2000202010221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12201020199969 and 12201020200005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101675168274 + ... + 101675168393.

It is an arithmetic number, because the mean of its divisors is an integer number (1423452356676).

Almost surely, 2^{12201020200020} is an apocalyptic number.

12201020200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201020200020 is an abundant number, since it is smaller than the sum of its proper divisors (21961836360204).

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

12201020200020 is a wasteful number, since it uses less digits than its factorization.

12201020200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203350336679 (or 203350336677 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12201020200020 its reverse (2000202010221), we get a palindrome (14201222210241).

The spelling of 12201020200020 in words is "twelve trillion, two hundred one billion, twenty million, two hundred thousand, twenty".