100243444201 has 4 divisors (see below), whose sum is σ = 100244226004. Its totient is φ = 100242662400.

The previous prime is 100243444187. The next prime is 100243444229. The reversal of 100243444201 is 102444342001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102444342001 = 151 ⋅678439351.

It can be written as a sum of positive squares in 2 ways, for example, as 40844005801 + 59399438400 = 202099^2 + 243720^2 .

It is a cyclic number.

It is not a de Polignac number, because 100243444201 - 2¹³ = 100243436009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100243444241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148440 + ... + 471721.

It is an arithmetic number, because the mean of its divisors is an integer number (25061056501).

Almost surely, 2^100243444201 is an apocalyptic number.

It is an amenable number.

100243444201 is a deficient number, since it is larger than the sum of its proper divisors (781803).

100243444201 is an equidigital number, since it uses as much as digits as its factorization.

100243444201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781802.

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

Adding to 100243444201 its reverse (102444342001), we get a palindrome (202687786202).

The spelling of 100243444201 in words is "one hundred billion, two hundred forty-three million, four hundred forty-four thousand, two hundred one".