201043220240 has 20 divisors (see below), whose sum is σ = 467425487244. Its totient is φ = 80417288064.

The previous prime is 201043220237. The next prime is 201043220251. The reversal of 201043220240 is 42022340102.

It can be written as a sum of positive squares in 2 ways, for example, as 90882955024 + 110160265216 = 301468^2 + 331904^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1256520047 + ... + 1256520206.

Almost surely, 2^201043220240 is an apocalyptic number.

201043220240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201043220240 is an abundant number, since it is smaller than the sum of its proper divisors (266382267004).

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

201043220240 is a wasteful number, since it uses less digits than its factorization.

201043220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513040266 (or 2513040260 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 201043220240 its reverse (42022340102), we get a palindrome (243065560342).

The spelling of 201043220240 in words is "two hundred one billion, forty-three million, two hundred twenty thousand, two hundred forty".