121220268 has 96 divisors (see below), whose sum is σ = 330333696. Its totient is φ = 34255872.

The previous prime is 121220243. The next prime is 121220269. The reversal of 121220268 is 862022121.

It is not an unprimeable number, because it can be changed into a prime (121220269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113505 + ... + 114567.

It is an arithmetic number, because the mean of its divisors is an integer number (3440976).

Almost surely, 2^121220268 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 121220268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165166848).

121220268 is an abundant number, since it is smaller than the sum of its proper divisors (209113428).

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

121220268 is a wasteful number, since it uses less digits than its factorization.

121220268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 121220268 is about 11010.0076294251. The cubic root of 121220268 is about 494.9086904325.

Adding to 121220268 its reverse (862022121), we get a palindrome (983242389).

The spelling of 121220268 in words is "one hundred twenty-one million, two hundred twenty thousand, two hundred sixty-eight".