211103302021 has 2 divisors, whose sum is σ = 211103302022. Its totient is φ = 211103302020.

The previous prime is 211103302001. The next prime is 211103302027. The reversal of 211103302021 is 120203301112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182658792996 + 28444509025 = 427386^2 + 168655^2 .

It is a cyclic number.

It is not a de Polignac number, because 211103302021 - 2⁹ = 211103301509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211103301986 and 211103302004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211103302027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105551651010 + 105551651011.

It is an arithmetic number, because the mean of its divisors is an integer number (105551651011).

Almost surely, 2^211103302021 is an apocalyptic number.

It is an amenable number.

211103302021 is a deficient number, since it is larger than the sum of its proper divisors (1).

211103302021 is an equidigital number, since it uses as much as digits as its factorization.

211103302021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 211103302021 its reverse (120203301112), we get a palindrome (331306603133).

Subtracting from 211103302021 its reverse (120203301112), we obtain a palindrome (90900000909).

The spelling of 211103302021 in words is "two hundred eleven billion, one hundred three million, three hundred two thousand, twenty-one".