130320312221 has 16 divisors (see below), whose sum is σ = 145928981376. Its totient is φ = 115377000000.

The previous prime is 130320312203. The next prime is 130320312251. The reversal of 130320312221 is 122213023031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130320312221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130320312193 and 130320312202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130320312251) 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, 893705 + ... + 1029246.

It is an arithmetic number, because the mean of its divisors is an integer number (9120561336).

Almost surely, 2^130320312221 is an apocalyptic number.

130320312221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130320312221 is a deficient number, since it is larger than the sum of its proper divisors (15608669155).

130320312221 is a wasteful number, since it uses less digits than its factorization.

130320312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923124.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 130320312221 its reverse (122213023031), we get a palindrome (252533335252).

The spelling of 130320312221 in words is "one hundred thirty billion, three hundred twenty million, three hundred twelve thousand, two hundred twenty-one".