200561200121044 has 36 divisors (see below), whose sum is σ = 412327729002420. Its totient is φ = 85103762419200.

The previous prime is 200561200121041. The next prime is 200561200121053. The reversal of 200561200121044 is 440121002165002.

It can be written as a sum of positive squares in 2 ways, for example, as 87237468010000 + 113323732111044 = 9340100^2 + 10645362^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200561200121041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5065680349 + ... + 5065719940.

It is an arithmetic number, because the mean of its divisors is an integer number (11453548027845).

Almost surely, 2^{200561200121044} is an apocalyptic number.

It is an amenable number.

200561200121044 is an abundant number, since it is smaller than the sum of its proper divisors (211766528881376).

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

200561200121044 is a wasteful number, since it uses less digits than its factorization.

200561200121044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10131400408 (or 10131400399 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 200561200121044 its reverse (440121002165002), we get a palindrome (640682202286046).

The spelling of 200561200121044 in words is "two hundred trillion, five hundred sixty-one billion, two hundred million, one hundred twenty-one thousand, forty-four".