100421213441 has 2 divisors, whose sum is σ = 100421213442. Its totient is φ = 100421213440.

The previous prime is 100421213429. The next prime is 100421213471. The reversal of 100421213441 is 144312124001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65556481600 + 34864731841 = 256040^2 + 186721^2 .

It is a cyclic number.

It is not a de Polignac number, because 100421213441 - 2¹⁸ = 100420951297 is a prime.

It is not a weakly prime, because it can be changed into another prime (100421213401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50210606720 + 50210606721.

It is an arithmetic number, because the mean of its divisors is an integer number (50210606721).

Almost surely, 2^100421213441 is an apocalyptic number.

It is an amenable number.

100421213441 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421213441 is an equidigital number, since it uses as much as digits as its factorization.

100421213441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 100421213441 its reverse (144312124001), we get a palindrome (244733337442).

The spelling of 100421213441 in words is "one hundred billion, four hundred twenty-one million, two hundred thirteen thousand, four hundred forty-one".