211367213345305 has 4 divisors (see below), whose sum is σ = 253640656014372. Its totient is φ = 169093770676240.

The previous prime is 211367213345263. The next prime is 211367213345347. The reversal of 211367213345305 is 503543312763112.

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

It is an interprime number because it is at equal distance from previous prime (211367213345263) and next prime (211367213345347).

It can be written as a sum of positive squares in 2 ways, for example, as 104684983738624 + 106682229606681 = 10231568^2 + 10328709^2 .

It is a de Polignac number, because none of the positive numbers 2^k-211367213345305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21136721334526 + ... + 21136721334535.

It is an arithmetic number, because the mean of its divisors is an integer number (63410164003593).

Almost surely, 2^{211367213345305} is an apocalyptic number.

It is an amenable number.

211367213345305 is a deficient number, since it is larger than the sum of its proper divisors (42273442669067).

211367213345305 is an equidigital number, since it uses as much as digits as its factorization.

211367213345305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42273442669066.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 211367213345305 in words is "two hundred eleven trillion, three hundred sixty-seven billion, two hundred thirteen million, three hundred forty-five thousand, three hundred five".