109465221 has 4 divisors (see below), whose sum is σ = 145953632. Its totient is φ = 72976812.

The previous prime is 109465219. The next prime is 109465241. The reversal of 109465221 is 122564901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122564901 = 3 ⋅40854967.

It is not a de Polignac number, because 109465221 - 2¹ = 109465219 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 (109465201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18244201 + ... + 18244206.

It is an arithmetic number, because the mean of its divisors is an integer number (36488408).

Almost surely, 2^109465221 is an apocalyptic number.

It is an amenable number.

109465221 is a deficient number, since it is larger than the sum of its proper divisors (36488411).

109465221 is an equidigital number, since it uses as much as digits as its factorization.

109465221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36488410.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 109465221 is about 10462.5628313526. The cubic root of 109465221 is about 478.3642540792.

The spelling of 109465221 in words is "one hundred nine million, four hundred sixty-five thousand, two hundred twenty-one".