2000121200020 has 24 divisors (see below), whose sum is σ = 4238788969800. Its totient is φ = 792708584832.

The previous prime is 2000121200009. The next prime is 2000121200071. The reversal of 2000121200020 is 200021210002.

It can be written as a sum of positive squares in 4 ways, for example, as 140154394384 + 1859966805636 = 374372^2 + 1363806^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 458741215 + ... + 458745574.

It is an arithmetic number, because the mean of its divisors is an integer number (176616207075).

Almost surely, 2^{2000121200020} is an apocalyptic number.

2000121200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2000121200020 is an abundant number, since it is smaller than the sum of its proper divisors (2238667769780).

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

2000121200020 is a wasteful number, since it uses less digits than its factorization.

2000121200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917486907 (or 917486905 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2000121200020 its reverse (200021210002), we get a palindrome (2200142410022).

The spelling of 2000121200020 in words is "two trillion, one hundred twenty-one million, two hundred thousand, twenty".