122223456678 has 16 divisors (see below), whose sum is σ = 244511850240. Its totient is φ = 40730329416.

The previous prime is 122223456647. The next prime is 122223456703. The reversal of 122223456678 is 876654322221.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2681218 + ... + 2726421.

It is an arithmetic number, because the mean of its divisors is an integer number (15281990640).

Almost surely, 2^122223456678 is an apocalyptic number.

122223456678 is an abundant number, since it is smaller than the sum of its proper divisors (122288393562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122223456678 is a wasteful number, since it uses less digits than its factorization.

122223456678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5411411.

The product of its digits is 1935360, while the sum is 48.

Adding to 122223456678 its reverse (876654322221), we get a palindrome (998877778899).

The spelling of 122223456678 in words is "one hundred twenty-two billion, two hundred twenty-three million, four hundred fifty-six thousand, six hundred seventy-eight".