130121225 has 24 divisors (see below), whose sum is σ = 177821952. Its totient is φ = 93844800.

The previous prime is 130121207. The next prime is 130121227. The reversal of 130121225 is 522121031.

It is a happy number.

It is not a de Polignac number, because 130121225 - 2¹⁰ = 130120201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130121227) 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, 9320 + ... + 18630.

It is an arithmetic number, because the mean of its divisors is an integer number (7409248).

Almost surely, 2^130121225 is an apocalyptic number.

It is an amenable number.

130121225 is a deficient number, since it is larger than the sum of its proper divisors (47700727).

130121225 is a wasteful number, since it uses less digits than its factorization.

130121225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9377 (or 9372 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 130121225 is about 11407.0690801801. The cubic root of 130121225 is about 506.7371148484.

Adding to 130121225 its reverse (522121031), we get a palindrome (652242256).

The spelling of 130121225 in words is "one hundred thirty million, one hundred twenty-one thousand, two hundred twenty-five".