121445225 has 12 divisors (see below), whose sum is σ = 164282640. Its totient is φ = 88323600.

The previous prime is 121445213. The next prime is 121445231. The reversal of 121445225 is 522544121.

It is not a de Polignac number, because 121445225 - 2¹⁰ = 121444201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121445194 and 121445203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220535 + ... + 221084.

It is an arithmetic number, because the mean of its divisors is an integer number (13690220).

Almost surely, 2^121445225 is an apocalyptic number.

It is an amenable number.

121445225 is a deficient number, since it is larger than the sum of its proper divisors (42837415).

121445225 is a wasteful number, since it uses less digits than its factorization.

121445225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441640 (or 441635 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 121445225 is about 11020.2189179707. The cubic root of 121445225 is about 495.2146469017.

Adding to 121445225 its reverse (522544121), we get a palindrome (643989346).

The spelling of 121445225 in words is "one hundred twenty-one million, four hundred forty-five thousand, two hundred twenty-five".