12112202109 has 64 divisors (see below), whose sum is σ = 20529192960. Its totient is φ = 6189004800.

The previous prime is 12112202059. The next prime is 12112202171. The reversal of 12112202109 is 90120221121.

It is not a de Polignac number, because 12112202109 - 2⁹ = 12112201597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112200109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1234977 + ... + 1244745.

It is an arithmetic number, because the mean of its divisors is an integer number (320768640).

Almost surely, 2^12112202109 is an apocalyptic number.

It is an amenable number.

12112202109 is a deficient number, since it is larger than the sum of its proper divisors (8416990851).

12112202109 is a wasteful number, since it uses less digits than its factorization.

12112202109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9970.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 12112202109 in words is "twelve billion, one hundred twelve million, two hundred two thousand, one hundred nine".