109921411 has 4 divisors (see below), whose sum is σ = 109988032. Its totient is φ = 109854792.

The previous prime is 109921379. The next prime is 109921423. The reversal of 109921411 is 114129901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114129901 = 541 ⋅210961.

It is a cyclic number.

It is not a de Polignac number, because 109921411 - 2⁵ = 109921379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109921411.

It is not an unprimeable number, because it can be changed into a prime (109921211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30771 + ... + 34156.

It is an arithmetic number, because the mean of its divisors is an integer number (27497008).

Almost surely, 2^109921411 is an apocalyptic number.

109921411 is a deficient number, since it is larger than the sum of its proper divisors (66621).

109921411 is an equidigital number, since it uses as much as digits as its factorization.

109921411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66620.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 109921411 is about 10484.3412287086. The cubic root of 109921411 is about 479.0278515832.

It can be divided in two parts, 10992 and 1411, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 109921411 in words is "one hundred nine million, nine hundred twenty-one thousand, four hundred eleven".