130221018 has 24 divisors (see below), whose sum is σ = 291248256. Its totient is φ = 42006600.

The previous prime is 130221001. The next prime is 130221097. The reversal of 130221018 is 810122031.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116128 + ... + 117243.

It is an arithmetic number, because the mean of its divisors is an integer number (12135344).

Almost surely, 2^130221018 is an apocalyptic number.

130221018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

130221018 is an abundant number, since it is smaller than the sum of its proper divisors (161027238).

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

130221018 is a wasteful number, since it uses less digits than its factorization.

130221018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233410 (or 233407 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 130221018 is about 11411.4424154004. The cubic root of 130221018 is about 506.8666245804.

Adding to 130221018 its reverse (810122031), we get a palindrome (940343049).

The spelling of 130221018 in words is "one hundred thirty million, two hundred twenty-one thousand, eighteen".