200021200120000 has 560 divisors, whose sum is σ = 578810229687360. Its totient is φ = 67144605696000.

The previous prime is 200021200119947. The next prime is 200021200120039. The reversal of 200021200120000 is 21002120002.

It is a tau number, because it is divible by the number of its divisors (560).

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2800244286 + ... + 2800315714.

Almost surely, 2^{200021200120000} is an apocalyptic number.

200021200120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200021200120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289405114843680).

200021200120000 is an abundant number, since it is smaller than the sum of its proper divisors (378789029567360).

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

200021200120000 is an equidigital number, since it uses as much as digits as its factorization.

200021200120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71678 (or 71653 counting only the distinct ones).

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

Adding to 200021200120000 its reverse (21002120002), we get a palindrome (200042202240002).

The spelling of 200021200120000 in words is "two hundred trillion, twenty-one billion, two hundred million, one hundred twenty thousand".