122311216 has 20 divisors (see below), whose sum is σ = 237150000. Its totient is φ = 61111232.

The previous prime is 122311199. The next prime is 122311219. The reversal of 122311216 is 612113221.

It is a junction number, because it is equal to n+sod(n) for n = 122311193 and 122311202.

It is not an unprimeable number, because it can be changed into a prime (122311219) 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, 39285 + ... + 42283.

It is an arithmetic number, because the mean of its divisors is an integer number (11857500).

Almost surely, 2^122311216 is an apocalyptic number.

122311216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

122311216 is a deficient number, since it is larger than the sum of its proper divisors (114838784).

122311216 is a wasteful number, since it uses less digits than its factorization.

122311216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556 (or 5550 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 122311216 is about 11059.4401304949. The cubic root of 122311216 is about 496.3889379111.

Adding to 122311216 its reverse (612113221), we get a palindrome (734424437).

The spelling of 122311216 in words is "one hundred twenty-two million, three hundred eleven thousand, two hundred sixteen".