211400244073 has 2 divisors, whose sum is σ = 211400244074. Its totient is φ = 211400244072.

The previous prime is 211400244071. The next prime is 211400244137. The reversal of 211400244073 is 370442004112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197586473049 + 13813771024 = 444507^2 + 117532^2 .

It is a cyclic number.

It is not a de Polignac number, because 211400244073 - 2¹ = 211400244071 is a prime.

Together with 211400244071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211400244071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105700122036 + 105700122037.

It is an arithmetic number, because the mean of its divisors is an integer number (105700122037).

Almost surely, 2^211400244073 is an apocalyptic number.

It is an amenable number.

211400244073 is a deficient number, since it is larger than the sum of its proper divisors (1).

211400244073 is an equidigital number, since it uses as much as digits as its factorization.

211400244073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 211400244073 its reverse (370442004112), we get a palindrome (581842248185).

The spelling of 211400244073 in words is "two hundred eleven billion, four hundred million, two hundred forty-four thousand, seventy-three".