212709122173 has 8 divisors (see below), whose sum is σ = 213300341280. Its totient is φ = 212118484080.

The previous prime is 212709122113. The next prime is 212709122177. The reversal of 212709122173 is 371221907212.

212709122173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212709122173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212709122177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593163 + ... + 881623.

It is an arithmetic number, because the mean of its divisors is an integer number (26662542660).

Almost surely, 2^212709122173 is an apocalyptic number.

It is an amenable number.

212709122173 is a deficient number, since it is larger than the sum of its proper divisors (591219107).

212709122173 is a wasteful number, since it uses less digits than its factorization.

212709122173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290507.

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 212709122173 in words is "two hundred twelve billion, seven hundred nine million, one hundred twenty-two thousand, one hundred seventy-three".