130331312221 has 16 divisors (see below), whose sum is σ = 145341923328. Its totient is φ = 115852518000.

The previous prime is 130331312179. The next prime is 130331312227. The reversal of 130331312221 is 122213133031.

It is a cyclic number.

It is not a de Polignac number, because 130331312221 - 2¹¹ = 130331310173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130331312192 and 130331312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130331312227) 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, 430996 + ... + 668146.

It is an arithmetic number, because the mean of its divisors is an integer number (9083870208).

Almost surely, 2^130331312221 is an apocalyptic number.

130331312221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130331312221 is a deficient number, since it is larger than the sum of its proper divisors (15010611107).

130331312221 is a wasteful number, since it uses less digits than its factorization.

130331312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238272.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 130331312221 its reverse (122213133031), we get a palindrome (252544445252).

The spelling of 130331312221 in words is "one hundred thirty billion, three hundred thirty-one million, three hundred twelve thousand, two hundred twenty-one".