100244440181 has 2 divisors, whose sum is σ = 100244440182. Its totient is φ = 100244440180.

The previous prime is 100244440171. The next prime is 100244440237. The reversal of 100244440181 is 181044442001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69361649956 + 30882790225 = 263366^2 + 175735^2 .

It is an emirp because it is prime and its reverse (181044442001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100244440181 - 2⁶ = 100244440117 is a prime.

It is a super-2 number, since 2×100244440181² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100244440111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50122220090 + 50122220091.

It is an arithmetic number, because the mean of its divisors is an integer number (50122220091).

Almost surely, 2^100244440181 is an apocalyptic number.

It is an amenable number.

100244440181 is a deficient number, since it is larger than the sum of its proper divisors (1).

100244440181 is an equidigital number, since it uses as much as digits as its factorization.

100244440181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 29.

Adding to 100244440181 its reverse (181044442001), we get a palindrome (281288882182).

The spelling of 100244440181 in words is "one hundred billion, two hundred forty-four million, four hundred forty thousand, one hundred eighty-one".