2101003442221 has 2 divisors, whose sum is σ = 2101003442222. Its totient is φ = 2101003442220.

The previous prime is 2101003442201. The next prime is 2101003442233. The reversal of 2101003442221 is 1222443001012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1146796824996 + 954206617225 = 1070886^2 + 976835^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101003442221 - 2⁵ = 2101003442189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101003442192 and 2101003442201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101003442201) 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, 1050501721110 + 1050501721111.

It is an arithmetic number, because the mean of its divisors is an integer number (1050501721111).

Almost surely, 2^{2101003442221} is an apocalyptic number.

It is an amenable number.

2101003442221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101003442221 is an equidigital number, since it uses as much as digits as its factorization.

2101003442221 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 22.

Adding to 2101003442221 its reverse (1222443001012), we get a palindrome (3323446443233).

The spelling of 2101003442221 in words is "two trillion, one hundred one billion, three million, four hundred forty-two thousand, two hundred twenty-one".