109218921912 has 96 divisors (see below), whose sum is σ = 311956444800. Its totient is φ = 35789213664.

The previous prime is 109218921907. The next prime is 109218921913. The reversal of 109218921912 is 219129812901.

109218921912 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109218921913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 361428 + ... + 590819.

It is an arithmetic number, because the mean of its divisors is an integer number (3249546300).

Almost surely, 2^109218921912 is an apocalyptic number.

109218921912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

109218921912 is an abundant number, since it is smaller than the sum of its proper divisors (202737522888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109218921912 is an equidigital number, since it uses as much as digits as its factorization.

109218921912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952327 (or 952311 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 45.

The spelling of 109218921912 in words is "one hundred nine billion, two hundred eighteen million, nine hundred twenty-one thousand, nine hundred twelve".