130021109 has 2 divisors, whose sum is σ = 130021110. Its totient is φ = 130021108.

The previous prime is 130021097. The next prime is 130021153. The reversal of 130021109 is 901120031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70190884 + 59830225 = 8378^2 + 7735^2 .

It is a cyclic number.

It is not a de Polignac number, because 130021109 - 2⁸ = 130020853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130021909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65010554 + 65010555.

It is an arithmetic number, because the mean of its divisors is an integer number (65010555).

Almost surely, 2^130021109 is an apocalyptic number.

It is an amenable number.

130021109 is a deficient number, since it is larger than the sum of its proper divisors (1).

130021109 is an equidigital number, since it uses as much as digits as its factorization.

130021109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 130021109 is about 11402.6799043032. The cubic root of 130021109 is about 506.6071193773.

The spelling of 130021109 in words is "one hundred thirty million, twenty-one thousand, one hundred nine".