211455041173 has 2 divisors, whose sum is σ = 211455041174. Its totient is φ = 211455041172.

The previous prime is 211455041153. The next prime is 211455041177. The reversal of 211455041173 is 371140554112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108608475364 + 102846565809 = 329558^2 + 320697^2 .

It is a cyclic number.

It is not a de Polignac number, because 211455041173 - 2³⁷ = 74016087701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211455041177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105727520586 + 105727520587.

It is an arithmetic number, because the mean of its divisors is an integer number (105727520587).

Almost surely, 2^211455041173 is an apocalyptic number.

It is an amenable number.

211455041173 is a deficient number, since it is larger than the sum of its proper divisors (1).

211455041173 is an equidigital number, since it uses as much as digits as its factorization.

211455041173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 211455041173 its reverse (371140554112), we get a palindrome (582595595285).

The spelling of 211455041173 in words is "two hundred eleven billion, four hundred fifty-five million, forty-one thousand, one hundred seventy-three".