109221643 has 8 divisors (see below), whose sum is σ = 111614976. Its totient is φ = 106852200.

The previous prime is 109221599. The next prime is 109221661. The reversal of 109221643 is 346122901.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109221643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109222643) 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, 3430 + ... + 15172.

It is an arithmetic number, because the mean of its divisors is an integer number (13951872).

Almost surely, 2^109221643 is an apocalyptic number.

109221643 is a deficient number, since it is larger than the sum of its proper divisors (2393333).

109221643 is a wasteful number, since it uses less digits than its factorization.

109221643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11945.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 109221643 is about 10450.9158928775. The cubic root of 109221643 is about 478.0091777093.

The spelling of 109221643 in words is "one hundred nine million, two hundred twenty-one thousand, six hundred forty-three".