201044440123 has 2 divisors, whose sum is σ = 201044440124. Its totient is φ = 201044440122.

The previous prime is 201044440033. The next prime is 201044440189. The reversal of 201044440123 is 321044440102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201044440123 - 2²¹ = 201042342971 is a prime.

It is not a weakly prime, because it can be changed into another prime (201044140123) 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 as a sum of consecutive naturals, namely, 100522220061 + 100522220062.

It is an arithmetic number, because the mean of its divisors is an integer number (100522220062).

Almost surely, 2^201044440123 is an apocalyptic number.

201044440123 is a deficient number, since it is larger than the sum of its proper divisors (1).

201044440123 is an equidigital number, since it uses as much as digits as its factorization.

201044440123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 201044440123 its reverse (321044440102), we get a palindrome (522088880225).

The spelling of 201044440123 in words is "two hundred one billion, forty-four million, four hundred forty thousand, one hundred twenty-three".