221303121030001 has 2 divisors, whose sum is σ = 221303121030002. Its totient is φ = 221303121030000.

The previous prime is 221303121029971. The next prime is 221303121030109. The reversal of 221303121030001 is 100030121303122.

221303121030001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214469727696225 + 6833393333776 = 14644785^2 + 2614076^2 .

It is a cyclic number.

It is not a de Polignac number, because 221303121030001 - 2¹¹ = 221303121027953 is a prime.

It is not a weakly prime, because it can be changed into another prime (221303121030401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110651560515000 + 110651560515001.

It is an arithmetic number, because the mean of its divisors is an integer number (110651560515001).

Almost surely, 2^{221303121030001} is an apocalyptic number.

It is an amenable number.

221303121030001 is a deficient number, since it is larger than the sum of its proper divisors (1).

221303121030001 is an equidigital number, since it uses as much as digits as its factorization.

221303121030001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221303121030001 its reverse (100030121303122), we get a palindrome (321333242333123).

The spelling of 221303121030001 in words is "two hundred twenty-one trillion, three hundred three billion, one hundred twenty-one million, thirty thousand, one".