12020109 has 16 divisors (see below), whose sum is σ = 16499712. Its totient is φ = 7779888.

The previous prime is 12020083. The next prime is 12020119. The reversal of 12020109 is 90102021.

It is a happy number.

It is not a de Polignac number, because 12020109 - 2⁹ = 12019597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22722 + ... + 23244.

It is an arithmetic number, because the mean of its divisors is an integer number (1031232).

Almost surely, 2^12020109 is an apocalyptic number.

It is an amenable number.

12020109 is a deficient number, since it is larger than the sum of its proper divisors (4479603).

12020109 is a wasteful number, since it uses less digits than its factorization.

12020109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 12020109 is about 3467.0028843368. The cubic root of 12020109 is about 229.0706608029.

The spelling of 12020109 in words is "twelve million, twenty thousand, one hundred nine".