130121412221 has 16 divisors (see below), whose sum is σ = 138139752240. Its totient is φ = 122349534720.

The previous prime is 130121412217. The next prime is 130121412247. The reversal of 130121412221 is 122214121031.

It can be written as a sum of positive squares in 8 ways, for example, as 30274260025 + 99847152196 = 173995^2 + 315986^2 .

It is a cyclic number.

It is not a de Polignac number, because 130121412221 - 2² = 130121412217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130121412193 and 130121412202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130121112221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564035 + ... + 760511.

It is an arithmetic number, because the mean of its divisors is an integer number (8633734515).

Almost surely, 2^130121412221 is an apocalyptic number.

It is an amenable number.

130121412221 is a deficient number, since it is larger than the sum of its proper divisors (8018340019).

130121412221 is a wasteful number, since it uses less digits than its factorization.

130121412221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197104.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 130121412221 its reverse (122214121031), we get a palindrome (252335533252).

The spelling of 130121412221 in words is "one hundred thirty billion, one hundred twenty-one million, four hundred twelve thousand, two hundred twenty-one".