100241124821 has 2 divisors, whose sum is σ = 100241124822. Its totient is φ = 100241124820.

The previous prime is 100241124817. The next prime is 100241124847. The reversal of 100241124821 is 128421142001.

It is an a-pointer prime, because the next prime (100241124847) can be obtained adding 100241124821 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82002622321 + 18238502500 = 286361^2 + 135050^2 .

It is an emirp because it is prime and its reverse (128421142001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100241124821 - 2² = 100241124817 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100241124881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50120562410 + 50120562411.

It is an arithmetic number, because the mean of its divisors is an integer number (50120562411).

Almost surely, 2^100241124821 is an apocalyptic number.

It is an amenable number.

100241124821 is a deficient number, since it is larger than the sum of its proper divisors (1).

100241124821 is an equidigital number, since it uses as much as digits as its factorization.

100241124821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 26.

Adding to 100241124821 its reverse (128421142001), we get a palindrome (228662266822).

The spelling of 100241124821 in words is "one hundred billion, two hundred forty-one million, one hundred twenty-four thousand, eight hundred twenty-one".