130821499 has 2 divisors, whose sum is σ = 130821500. Its totient is φ = 130821498.

The previous prime is 130821497. The next prime is 130821503. The reversal of 130821499 is 994128031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 130821499 - 2¹ = 130821497 is a prime.

It is a super-2 number, since 2×130821499² = 34228529201214002, which contains 22 as substring.

Together with 130821497, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (130821491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65410749 + 65410750.

It is an arithmetic number, because the mean of its divisors is an integer number (65410750).

Almost surely, 2^130821499 is an apocalyptic number.

130821499 is a deficient number, since it is larger than the sum of its proper divisors (1).

130821499 is an equidigital number, since it uses as much as digits as its factorization.

130821499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 130821499 is about 11437.7226317130. The cubic root of 130821499 is about 507.6445254782.

The spelling of 130821499 in words is "one hundred thirty million, eight hundred twenty-one thousand, four hundred ninety-nine".