130121003 has 4 divisors (see below), whose sum is σ = 133294728. Its totient is φ = 126947280.

The previous prime is 130120997. The next prime is 130121011. The reversal of 130121003 is 300121031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130121003 - 2¹² = 130116907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130121023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1586801 + ... + 1586882.

It is an arithmetic number, because the mean of its divisors is an integer number (33323682).

Almost surely, 2^130121003 is an apocalyptic number.

130121003 is a deficient number, since it is larger than the sum of its proper divisors (3173725).

130121003 is an equidigital number, since it uses as much as digits as its factorization.

130121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173724.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 130121003 is about 11407.0593493678. The cubic root of 130121003 is about 506.7368266666.

Adding to 130121003 its reverse (300121031), we get a palindrome (430242034).

The spelling of 130121003 in words is "one hundred thirty million, one hundred twenty-one thousand, three".