109821096 has 320 divisors, whose sum is σ = 401448960. Its totient is φ = 27216000.

The previous prime is 109821079. The next prime is 109821119. The reversal of 109821096 is 690128901.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 109821096.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1546741 + ... + 1546811.

It is an arithmetic number, because the mean of its divisors is an integer number (1254528).

Almost surely, 2^109821096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109821096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200724480).

109821096 is an abundant number, since it is smaller than the sum of its proper divisors (291627864).

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

109821096 is a wasteful number, since it uses less digits than its factorization.

109821096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 109821096 is about 10479.5560974690. The cubic root of 109821096 is about 478.8820859131.

Adding to 109821096 its reverse (690128901), we get a palindrome (799949997).

The spelling of 109821096 in words is "one hundred nine million, eight hundred twenty-one thousand, ninety-six".