11922218 has 16 divisors (see below), whose sum is σ = 22296384. Its totient is φ = 4644960.

The previous prime is 11922193. The next prime is 11922221. The reversal of 11922218 is 81222911.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38555 + ... + 38862.

It is an arithmetic number, because the mean of its divisors is an integer number (1393524).

Almost surely, 2^11922218 is an apocalyptic number.

11922218 is a deficient number, since it is larger than the sum of its proper divisors (10374166).

11922218 is a wasteful number, since it uses less digits than its factorization.

11922218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77437.

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

The square root of 11922218 is about 3452.8564986110. The cubic root of 11922218 is about 228.4471194228.

It can be divided in two parts, 11 and 922218, that added together give a palindrome (922229).

The spelling of 11922218 in words is "eleven million, nine hundred twenty-two thousand, two hundred eighteen".