130821266 has 16 divisors (see below), whose sum is σ = 198564288. Its totient is φ = 64638000.

The previous prime is 130821211. The next prime is 130821293. The reversal of 130821266 is 662128031.

It is a super-2 number, since 2×130821266² = 34228407275685512, which contains 22 as substring.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 62696 + ... + 64748.

It is an arithmetic number, because the mean of its divisors is an integer number (12410268).

Almost surely, 2^130821266 is an apocalyptic number.

130821266 is a deficient number, since it is larger than the sum of its proper divisors (67743022).

130821266 is a wasteful number, since it uses less digits than its factorization.

130821266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 130821266 is about 11437.7124461144. The cubic root of 130821266 is about 507.6442240975.

Adding to 130821266 its reverse (662128031), we get a palindrome (792949297).

The spelling of 130821266 in words is "one hundred thirty million, eight hundred twenty-one thousand, two hundred sixty-six".