122643210217 has 8 divisors (see below), whose sum is σ = 134126245152. Its totient is φ = 111215784000.

The previous prime is 122643210199. The next prime is 122643210241. The reversal of 122643210217 is 712012346221.

It is a happy number.

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-122643210217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122643210317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13897563 + ... + 13906384.

It is an arithmetic number, because the mean of its divisors is an integer number (16765780644).

Almost surely, 2^122643210217 is an apocalyptic number.

It is an amenable number.

122643210217 is a deficient number, since it is larger than the sum of its proper divisors (11483034935).

122643210217 is a wasteful number, since it uses less digits than its factorization.

122643210217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27804359.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 122643210217 its reverse (712012346221), we get a palindrome (834655556438).

The spelling of 122643210217 in words is "one hundred twenty-two billion, six hundred forty-three million, two hundred ten thousand, two hundred seventeen".