201000021020000 has 120 divisors (see below), whose sum is σ = 494514146499912. Its totient is φ = 80396115200000.

The previous prime is 201000021019949. The next prime is 201000021020011. The reversal of 201000021020000 is 20120000102.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 201000021020000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 431987480 + ... + 432452520.

Almost surely, 2^{201000021020000} is an apocalyptic number.

201000021020000 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 201000021020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247257073249956).

201000021020000 is an abundant number, since it is smaller than the sum of its proper divisors (293514125479912).

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

201000021020000 is an equidigital number, since it uses as much as digits as its factorization.

201000021020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486682 (or 486659 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 201000021020000 its reverse (20120000102), we get a palindrome (201020141020102).

The spelling of 201000021020000 in words is "two hundred one trillion, twenty-one million, twenty thousand".