121222668 has 72 divisors (see below), whose sum is σ = 340426800. Its totient is φ = 33436032.

The previous prime is 121222637. The next prime is 121222687. The reversal of 121222668 is 866222121.

121222668 is nontrivially palindromic in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13498 + ... + 20606.

It is an arithmetic number, because the mean of its divisors is an integer number (4728150).

Almost surely, 2^121222668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121222668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170213400).

121222668 is an abundant number, since it is smaller than the sum of its proper divisors (219204132).

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

121222668 is a wasteful number, since it uses less digits than its factorization.

121222668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7159 (or 7150 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 121222668 is about 11010.1166206358. The cubic root of 121222668 is about 494.9119565888.

Adding to 121222668 its reverse (866222121), we get a palindrome (987444789).

The spelling of 121222668 in words is "one hundred twenty-one million, two hundred twenty-two thousand, six hundred sixty-eight".