1012012109 has 4 divisors (see below), whose sum is σ = 1018458204. Its totient is φ = 1005566016.

The previous prime is 1012012097. The next prime is 1012012187. The reversal of 1012012109 is 9012102101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 738208900 + 273803209 = 27170^2 + 16547^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012012109 - 2⁴ = 1012012093 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 (1012012189) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3222812 + ... + 3223125.

It is an arithmetic number, because the mean of its divisors is an integer number (254614551).

Almost surely, 2^1012012109 is an apocalyptic number.

It is an amenable number.

1012012109 is a deficient number, since it is larger than the sum of its proper divisors (6446095).

1012012109 is an equidigital number, since it uses as much as digits as its factorization.

1012012109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6446094.

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

The square root of 1012012109 is about 31812.1377621813. The cubic root of 1012012109 is about 1003.9881101670.

The spelling of 1012012109 in words is "one billion, twelve million, twelve thousand, one hundred nine".