130131234221 has 4 divisors (see below), whose sum is σ = 130132860444. Its totient is φ = 130129608000.

The previous prime is 130131234217. The next prime is 130131234241. The reversal of 130131234221 is 122432131031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11010304900 + 119120929321 = 104930^2 + 345139^2 .

It is a cyclic number.

It is not a de Polignac number, because 130131234221 - 2² = 130131234217 is a prime.

It is a super-2 number, since 2×130131234221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130131234241) 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, 686510 + ... + 855311.

It is an arithmetic number, because the mean of its divisors is an integer number (32533215111).

Almost surely, 2^130131234221 is an apocalyptic number.

It is an amenable number.

130131234221 is a deficient number, since it is larger than the sum of its proper divisors (1626223).

130131234221 is an equidigital number, since it uses as much as digits as its factorization.

130131234221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626222.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 130131234221 its reverse (122432131031), we get a palindrome (252563365252).

The spelling of 130131234221 in words is "one hundred thirty billion, one hundred thirty-one million, two hundred thirty-four thousand, two hundred twenty-one".