130121130221 has 4 divisors (see below), whose sum is σ = 131057253600. Its totient is φ = 129185006844.

The previous prime is 130121130197. The next prime is 130121130229. The reversal of 130121130221 is 122031121031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130121130221 - 2⁶ = 130121130157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130121130221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130121130229) 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, 468061481 + ... + 468061758.

It is an arithmetic number, because the mean of its divisors is an integer number (32764313400).

Almost surely, 2^130121130221 is an apocalyptic number.

It is an amenable number.

130121130221 is a deficient number, since it is larger than the sum of its proper divisors (936123379).

130121130221 is an equidigital number, since it uses as much as digits as its factorization.

130121130221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936123378.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 130121130221 its reverse (122031121031), we get a palindrome (252152251252).

The spelling of 130121130221 in words is "one hundred thirty billion, one hundred twenty-one million, one hundred thirty thousand, two hundred twenty-one".