12102321109 has 16 divisors (see below), whose sum is σ = 12348313600. Its totient is φ = 11859208704.

The previous prime is 12102321107. The next prime is 12102321113. The reversal of 12102321109 is 90112320121.

It is a cyclic number.

It is not a de Polignac number, because 12102321109 - 2¹ = 12102321107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12102321109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102321103) 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, 11320627 + ... + 11321695.

It is an arithmetic number, because the mean of its divisors is an integer number (771769600).

Almost surely, 2^12102321109 is an apocalyptic number.

It is an amenable number.

12102321109 is a deficient number, since it is larger than the sum of its proper divisors (245992491).

12102321109 is a wasteful number, since it uses less digits than its factorization.

12102321109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 12102321109 in words is "twelve billion, one hundred two million, three hundred twenty-one thousand, one hundred nine".