109218122 has 16 divisors (see below), whose sum is σ = 184101120. Its totient is φ = 48216432.

The previous prime is 109218119. The next prime is 109218127. The reversal of 109218122 is 221812901.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 109218091 and 109218100.

It is not an unprimeable number, because it can be changed into a prime (109218127) 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, 90722 + ... + 91917.

It is an arithmetic number, because the mean of its divisors is an integer number (11506320).

Almost surely, 2^109218122 is an apocalyptic number.

109218122 is a deficient number, since it is larger than the sum of its proper divisors (74882998).

109218122 is a wasteful number, since it uses less digits than its factorization.

109218122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182677.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 109218122 is about 10450.7474373846. The cubic root of 109218122 is about 478.0040410949.

The spelling of 109218122 in words is "one hundred nine million, two hundred eighteen thousand, one hundred twenty-two".