121522224 has 80 divisors (see below), whose sum is σ = 322995200. Its totient is φ = 39356928.

The previous prime is 121522217. The next prime is 121522229. The reversal of 121522224 is 422225121.

It is a super-3 number, since 3×121522224³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121522224.

It is not an unprimeable number, because it can be changed into a prime (121522229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276597 + ... + 277035.

It is an arithmetic number, because the mean of its divisors is an integer number (4037440).

Almost surely, 2^121522224 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 121522224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161497600).

121522224 is an abundant number, since it is smaller than the sum of its proper divisors (201472976).

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

121522224 is a wasteful number, since it uses less digits than its factorization.

121522224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602 (or 596 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 121522224 is about 11023.7118975416. The cubic root of 121522224 is about 495.3192838599.

Adding to 121522224 its reverse (422225121), we get a palindrome (543747345).

The spelling of 121522224 in words is "one hundred twenty-one million, five hundred twenty-two thousand, two hundred twenty-four".