211012321321 has 2 divisors, whose sum is σ = 211012321322. Its totient is φ = 211012321320.

The previous prime is 211012321243. The next prime is 211012321327. The reversal of 211012321321 is 123123210112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138783071296 + 72229250025 = 372536^2 + 268755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211012321321 is a prime.

It is not a weakly prime, because it can be changed into another prime (211012321327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105506160660 + 105506160661.

It is an arithmetic number, because the mean of its divisors is an integer number (105506160661).

Almost surely, 2^211012321321 is an apocalyptic number.

It is an amenable number.

211012321321 is a deficient number, since it is larger than the sum of its proper divisors (1).

211012321321 is an equidigital number, since it uses as much as digits as its factorization.

211012321321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211012321321 its reverse (123123210112), we get a palindrome (334135531433).

The spelling of 211012321321 in words is "two hundred eleven billion, twelve million, three hundred twenty-one thousand, three hundred twenty-one".