211003244321 has 2 divisors, whose sum is σ = 211003244322. Its totient is φ = 211003244320.

The previous prime is 211003244311. The next prime is 211003244381. The reversal of 211003244321 is 123442300112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160348990096 + 50654254225 = 400436^2 + 225065^2 .

It is a cyclic number.

It is not a de Polignac number, because 211003244321 - 2¹⁴ = 211003227937 is a prime.

It is a super-2 number, since 2×211003244321² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211003244311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105501622160 + 105501622161.

It is an arithmetic number, because the mean of its divisors is an integer number (105501622161).

Almost surely, 2^211003244321 is an apocalyptic number.

It is an amenable number.

211003244321 is a deficient number, since it is larger than the sum of its proper divisors (1).

211003244321 is an equidigital number, since it uses as much as digits as its factorization.

211003244321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 211003244321 its reverse (123442300112), we get a palindrome (334445544433).

The spelling of 211003244321 in words is "two hundred eleven billion, three million, two hundred forty-four thousand, three hundred twenty-one".