100243220331101 has 2 divisors, whose sum is σ = 100243220331102. Its totient is φ = 100243220331100.

The previous prime is 100243220331053. The next prime is 100243220331187. The reversal of 100243220331101 is 101133022342001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89392751391076 + 10850468940025 = 9454774^2 + 3294005^2 .

It is a cyclic number.

It is not a de Polignac number, because 100243220331101 - 2²⁶ = 100243153222237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100243223331101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50121610165550 + 50121610165551.

It is an arithmetic number, because the mean of its divisors is an integer number (50121610165551).

Almost surely, 2^{100243220331101} is an apocalyptic number.

It is an amenable number.

100243220331101 is a deficient number, since it is larger than the sum of its proper divisors (1).

100243220331101 is an equidigital number, since it uses as much as digits as its factorization.

100243220331101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 100243220331101 its reverse (101133022342001), we get a palindrome (201376242673102).

The spelling of 100243220331101 in words is "one hundred trillion, two hundred forty-three billion, two hundred twenty million, three hundred thirty-one thousand, one hundred one".