109641215 has 4 divisors (see below), whose sum is σ = 131569464. Its totient is φ = 87712968.

The previous prime is 109641209. The next prime is 109641221. The reversal of 109641215 is 512146901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512146901 = 7 ⋅73163843.

It is an interprime number because it is at equal distance from previous prime (109641209) and next prime (109641221).

It is a cyclic number.

It is not a de Polignac number, because 109641215 - 2⁶ = 109641151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10964117 + ... + 10964126.

It is an arithmetic number, because the mean of its divisors is an integer number (32892366).

Almost surely, 2^109641215 is an apocalyptic number.

109641215 is a deficient number, since it is larger than the sum of its proper divisors (21928249).

109641215 is an equidigital number, since it uses as much as digits as its factorization.

109641215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21928248.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 109641215 is about 10470.9701078744. The cubic root of 109641215 is about 478.6204820673.

The spelling of 109641215 in words is "one hundred nine million, six hundred forty-one thousand, two hundred fifteen".