211314440321 has 4 divisors (see below), whose sum is σ = 211382852100. Its totient is φ = 211246028544.

The previous prime is 211314440291. The next prime is 211314440339. The reversal of 211314440321 is 123044413112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185127109696 + 26187330625 = 430264^2 + 161825^2 .

It is a cyclic number.

It is not a de Polignac number, because 211314440321 - 2¹⁸ = 211314178177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211314440021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34201256 + ... + 34207433.

It is an arithmetic number, because the mean of its divisors is an integer number (52845713025).

Almost surely, 2^211314440321 is an apocalyptic number.

It is an amenable number.

211314440321 is a deficient number, since it is larger than the sum of its proper divisors (68411779).

211314440321 is an equidigital number, since it uses as much as digits as its factorization.

211314440321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68411778.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 211314440321 its reverse (123044413112), we get a palindrome (334358853433).

The spelling of 211314440321 in words is "two hundred eleven billion, three hundred fourteen million, four hundred forty thousand, three hundred twenty-one".