200021144240 has 40 divisors (see below), whose sum is σ = 467647233840. Its totient is φ = 79561477376.

The previous prime is 200021144161. The next prime is 200021144249. The reversal of 200021144240 is 42441120002.

200021144240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (200021144249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6969659 + ... + 6998298.

It is an arithmetic number, because the mean of its divisors is an integer number (11691180846).

Almost surely, 2^200021144240 is an apocalyptic number.

200021144240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200021144240 is an abundant number, since it is smaller than the sum of its proper divisors (267626089600).

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

200021144240 is a wasteful number, since it uses less digits than its factorization.

200021144240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13968149 (or 13968143 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 200021144240 its reverse (42441120002), we get a palindrome (242462264242).

The spelling of 200021144240 in words is "two hundred billion, twenty-one million, one hundred forty-four thousand, two hundred forty".