10120109 has 2 divisors, whose sum is σ = 10120110. Its totient is φ = 10120108.

The previous prime is 10120091. The next prime is 10120111. The reversal of 10120109 is 90102101.

Together with previous prime (10120091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8008900 + 2111209 = 2830^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120109 - 2¹⁶ = 10054573 is a prime.

It is a Sophie Germain prime.

Together with 10120111, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10120093 and 10120102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060054 + 5060055.

It is an arithmetic number, because the mean of its divisors is an integer number (5060055).

Almost surely, 2^10120109 is an apocalyptic number.

It is an amenable number.

10120109 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120109 is an equidigital number, since it uses as much as digits as its factorization.

10120109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 10120109 is about 3181.2118759995. The cubic root of 10120109 is about 216.3025951570.

The spelling of 10120109 in words is "ten million, one hundred twenty thousand, one hundred nine".