130221012 has 12 divisors (see below), whose sum is σ = 303849056. Its totient is φ = 43407000.

The previous prime is 130221001. The next prime is 130221097. The reversal of 130221012 is 210122031.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 10851751 = 130221012 / (1 + 3 + 0 + 2 + 2 + 1 + 0 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5425864 + ... + 5425887.

Almost surely, 2^130221012 is an apocalyptic number.

130221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130221012 is an abundant number, since it is smaller than the sum of its proper divisors (173628044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130221012 is a wasteful number, since it uses less digits than its factorization.

130221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10851758 (or 10851756 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 130221012 is about 11411.4421525064. The cubic root of 130221012 is about 506.8666167957.

Adding to 130221012 its reverse (210122031), we get a palindrome (340343043).

The spelling of 130221012 in words is "one hundred thirty million, two hundred twenty-one thousand, twelve".