11102110321021 has 2 divisors, whose sum is σ = 11102110321022. Its totient is φ = 11102110321020.

The previous prime is 11102110321019. The next prime is 11102110321037. The reversal of 11102110321021 is 12012301120111.

It is a happy number.

It is an a-pointer prime, because the next prime (11102110321037) can be obtained adding 11102110321021 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10045007616996 + 1057102704025 = 3169386^2 + 1028155^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102110321021 - 2¹ = 11102110321019 is a prime.

Together with 11102110321019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11102110320986 and 11102110321004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11102110321121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551055160510 + 5551055160511.

It is an arithmetic number, because the mean of its divisors is an integer number (5551055160511).

Almost surely, 2^{11102110321021} is an apocalyptic number.

It is an amenable number.

11102110321021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102110321021 is an equidigital number, since it uses as much as digits as its factorization.

11102110321021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11102110321021 its reverse (12012301120111), we get a palindrome (23114411441132).

The spelling of 11102110321021 in words is "eleven trillion, one hundred two billion, one hundred ten million, three hundred twenty-one thousand, twenty-one".