109519021 has 8 divisors (see below), whose sum is σ = 115791200. Its totient is φ = 103297680.

The previous prime is 109519009. The next prime is 109519027. The reversal of 109519021 is 120915901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109519021 - 2⁵ = 109518989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109519027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8235 + ... + 16936.

It is an arithmetic number, because the mean of its divisors is an integer number (14473900).

Almost surely, 2^109519021 is an apocalyptic number.

It is an amenable number.

109519021 is a deficient number, since it is larger than the sum of its proper divisors (6272179).

109519021 is a wasteful number, since it uses less digits than its factorization.

109519021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25419.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 109519021 is about 10465.1335872983. The cubic root of 109519021 is about 478.4426101133.

The spelling of 109519021 in words is "one hundred nine million, five hundred nineteen thousand, twenty-one".