121204425 has 24 divisors (see below), whose sum is σ = 201612096. Its totient is φ = 64248640.

The previous prime is 121204423. The next prime is 121204453. The reversal of 121204425 is 524402121.

It is not a de Polignac number, because 121204425 - 2¹ = 121204423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121204423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7687 + ... + 17363.

It is an arithmetic number, because the mean of its divisors is an integer number (8400504).

Almost surely, 2^121204425 is an apocalyptic number.

121204425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121204425 is a deficient number, since it is larger than the sum of its proper divisors (80407671).

121204425 is a wasteful number, since it uses less digits than its factorization.

121204425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9857 (or 9852 counting only the distinct ones).

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

The square root of 121204425 is about 11009.2881241250. The cubic root of 121204425 is about 494.8871286367.

Adding to 121204425 its reverse (524402121), we get a palindrome (645606546).

The spelling of 121204425 in words is "one hundred twenty-one million, two hundred four thousand, four hundred twenty-five".