109821159 has 48 divisors (see below), whose sum is σ = 199180800. Its totient is φ = 56852928.

The previous prime is 109821149. The next prime is 109821161. The reversal of 109821159 is 951128901.

It is not a de Polignac number, because 109821159 - 2¹¹ = 109819111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109821119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25537 + ... + 29525.

It is an arithmetic number, because the mean of its divisors is an integer number (4149600).

Almost surely, 2^109821159 is an apocalyptic number.

109821159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

109821159 is a deficient number, since it is larger than the sum of its proper divisors (89359641).

109821159 is a wasteful number, since it uses less digits than its factorization.

109821159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044 (or 4041 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 109821159 is about 10479.5591033211. The cubic root of 109821159 is about 478.8821774850.

The spelling of 109821159 in words is "one hundred nine million, eight hundred twenty-one thousand, one hundred fifty-nine".