20120012200020 has 24 divisors (see below), whose sum is σ = 56336034160224. Its totient is φ = 5365336586656.

The previous prime is 20120012199997. The next prime is 20120012200033. The reversal of 20120012200020 is 2000221002102.

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 = 20120012199969 and 20120012200005.

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, 167666768274 + ... + 167666768393.

It is an arithmetic number, because the mean of its divisors is an integer number (2347334756676).

Almost surely, 2^{20120012200020} is an apocalyptic number.

20120012200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120012200020 is an abundant number, since it is smaller than the sum of its proper divisors (36216021960204).

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

20120012200020 is a wasteful number, since it uses less digits than its factorization.

20120012200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335333536679 (or 335333536677 counting only the distinct ones).

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

Adding to 20120012200020 its reverse (2000221002102), we get a palindrome (22120233202122).

The spelling of 20120012200020 in words is "twenty trillion, one hundred twenty billion, twelve million, two hundred thousand, twenty".