100441123043221 has 2 divisors, whose sum is σ = 100441123043222. Its totient is φ = 100441123043220.

The previous prime is 100441123043207. The next prime is 100441123043267. The reversal of 100441123043221 is 122340321144001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94547638520721 + 5893484522500 = 9723561^2 + 2427650^2 .

It is a cyclic number.

It is not a de Polignac number, because 100441123043221 - 2¹¹ = 100441123041173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100441123043221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100441123049221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50220561521610 + 50220561521611.

It is an arithmetic number, because the mean of its divisors is an integer number (50220561521611).

Almost surely, 2^{100441123043221} is an apocalyptic number.

It is an amenable number.

100441123043221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100441123043221 is an equidigital number, since it uses as much as digits as its factorization.

100441123043221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 100441123043221 its reverse (122340321144001), we get a palindrome (222781444187222).

The spelling of 100441123043221 in words is "one hundred trillion, four hundred forty-one billion, one hundred twenty-three million, forty-three thousand, two hundred twenty-one".