130722218 has 16 divisors (see below), whose sum is σ = 216924480. Its totient is φ = 58581600.

The previous prime is 130722217. The next prime is 130722233. The reversal of 130722218 is 812227031.

130722218 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (130722211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40283 + ... + 43406.

It is an arithmetic number, because the mean of its divisors is an integer number (13557780).

Almost surely, 2^130722218 is an apocalyptic number.

130722218 is a deficient number, since it is larger than the sum of its proper divisors (86202262).

130722218 is a wasteful number, since it uses less digits than its factorization.

130722218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83773.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 130722218 is about 11433.3817394505. The cubic root of 130722218 is about 507.5160751054.

Adding to 130722218 its reverse (812227031), we get a palindrome (942949249).

The spelling of 130722218 in words is "one hundred thirty million, seven hundred twenty-two thousand, two hundred eighteen".