130312221 has 16 divisors (see below), whose sum is σ = 187944960. Its totient is φ = 79836480.

The previous prime is 130312219. The next prime is 130312223. The reversal of 130312221 is 122213031.

It is an interprime number because it is at equal distance from previous prime (130312219) and next prime (130312223).

It is not a de Polignac number, because 130312221 - 2¹ = 130312219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130312221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130312223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1636 + ... + 16226.

It is an arithmetic number, because the mean of its divisors is an integer number (11746560).

Almost surely, 2^130312221 is an apocalyptic number.

It is an amenable number.

130312221 is a deficient number, since it is larger than the sum of its proper divisors (57632739).

130312221 is a wasteful number, since it uses less digits than its factorization.

130312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14836.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 130312221 is about 11415.4378365440. The cubic root of 130312221 is about 506.9849284955.

Adding to 130312221 its reverse (122213031), we get a palindrome (252525252).

The spelling of 130312221 in words is "one hundred thirty million, three hundred twelve thousand, two hundred twenty-one".