201044104021 has 12 divisors (see below), whose sum is σ = 206938481988. Its totient is φ = 195174945792.

The previous prime is 201044103991. The next prime is 201044104057. The reversal of 201044104021 is 120401440102.

It can be written as a sum of positive squares in 6 ways, for example, as 97868239921 + 103175864100 = 312839^2 + 321210^2 .

It is not a de Polignac number, because 201044104021 - 2¹⁷ = 201043972949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201044104021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044107021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7714405 + ... + 7740421.

It is an arithmetic number, because the mean of its divisors is an integer number (17244873499).

Almost surely, 2^201044104021 is an apocalyptic number.

It is an amenable number.

201044104021 is a deficient number, since it is larger than the sum of its proper divisors (5894377967).

201044104021 is an frugal number, since it uses more digits than its factorization.

201044104021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26968 (or 26511 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 201044104021 its reverse (120401440102), we get a palindrome (321445544123).

The spelling of 201044104021 in words is "two hundred one billion, forty-four million, one hundred four thousand, twenty-one".