100324121221 has 2 divisors, whose sum is σ = 100324121222. Its totient is φ = 100324121220.

The previous prime is 100324121197. The next prime is 100324121239. The reversal of 100324121221 is 122121423001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82731016900 + 17593104321 = 287630^2 + 132639^2 .

It is a cyclic number.

It is not a de Polignac number, because 100324121221 - 2¹⁵ = 100324088453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100324121251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50162060610 + 50162060611.

It is an arithmetic number, because the mean of its divisors is an integer number (50162060611).

Almost surely, 2^100324121221 is an apocalyptic number.

It is an amenable number.

100324121221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100324121221 is an equidigital number, since it uses as much as digits as its factorization.

100324121221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 100324121221 its reverse (122121423001), we get a palindrome (222445544222).

The spelling of 100324121221 in words is "one hundred billion, three hundred twenty-four million, one hundred twenty-one thousand, two hundred twenty-one".