109029921 has 32 divisors (see below), whose sum is σ = 195191808. Its totient is φ = 52280640.

The previous prime is 109029919. The next prime is 109029941. The reversal of 109029921 is 129920901.

It is not a de Polignac number, because 109029921 - 2¹ = 109029919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109029901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15151 + ... + 21156.

It is an arithmetic number, because the mean of its divisors is an integer number (6099744).

Almost surely, 2^109029921 is an apocalyptic number.

109029921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

109029921 is a deficient number, since it is larger than the sum of its proper divisors (86161887).

109029921 is a wasteful number, since it uses less digits than its factorization.

109029921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36341.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 109029921 is about 10441.7393665998. The cubic root of 109029921 is about 477.7293230691.

The spelling of 109029921 in words is "one hundred nine million, twenty-nine thousand, nine hundred twenty-one".