122216194 has 4 divisors (see below), whose sum is σ = 183324294. Its totient is φ = 61108096.

The previous prime is 122216183. The next prime is 122216197. The reversal of 122216194 is 491612221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 108056025 + 14160169 = 10395^2 + 3763^2 .

It is not an unprimeable number, because it can be changed into a prime (122216197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30554047 + ... + 30554050.

Almost surely, 2^122216194 is an apocalyptic number.

122216194 is a deficient number, since it is larger than the sum of its proper divisors (61108100).

122216194 is an equidigital number, since it uses as much as digits as its factorization.

122216194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61108099.

The product of its digits is 1728, while the sum is 28.

The square root of 122216194 is about 11055.1433278814. The cubic root of 122216194 is about 496.2603585619.

The spelling of 122216194 in words is "one hundred twenty-two million, two hundred sixteen thousand, one hundred ninety-four".