1002112109 has 4 divisors (see below), whose sum is σ = 1019097120. Its totient is φ = 985127100.

The previous prime is 1002112103. The next prime is 1002112121. The reversal of 1002112109 is 9012112001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9012112001 = 61 ⋅147739541.

It is a cyclic number.

It is not a de Polignac number, because 1002112109 - 2⁸ = 1002111853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002112103) 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 in 3 ways as a sum of consecutive naturals, for example, 8492417 + ... + 8492534.

It is an arithmetic number, because the mean of its divisors is an integer number (254774280).

Almost surely, 2^1002112109 is an apocalyptic number.

It is an amenable number.

1002112109 is a deficient number, since it is larger than the sum of its proper divisors (16985011).

1002112109 is an equidigital number, since it uses as much as digits as its factorization.

1002112109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16985010.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1002112109 is about 31656.1543621458. The cubic root of 1002112109 is about 1000.7035412470.

The spelling of 1002112109 in words is "one billion, two million, one hundred twelve thousand, one hundred nine".