121522225 has 24 divisors (see below), whose sum is σ = 171542592. Its totient is φ = 84532800.

The previous prime is 121522217. The next prime is 121522229. The reversal of 121522225 is 522225121.

It is not a de Polignac number, because 121522225 - 2³ = 121522217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121522196 and 121522205.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3282 + ... + 15931.

It is an arithmetic number, because the mean of its divisors is an integer number (7147608).

Almost surely, 2^121522225 is an apocalyptic number.

It is an amenable number.

121522225 is a deficient number, since it is larger than the sum of its proper divisors (50020367).

121522225 is a wasteful number, since it uses less digits than its factorization.

121522225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19257 (or 19252 counting only the distinct ones).

The product of its digits is 800, while the sum is 22.

The square root of 121522225 is about 11023.7119428984. The cubic root of 121522225 is about 495.3192852185.

Adding to 121522225 its reverse (522225121), we get a palindrome (643747346).

The spelling of 121522225 in words is "one hundred twenty-one million, five hundred twenty-two thousand, two hundred twenty-five".