122216205 has 16 divisors (see below), whose sum is σ = 198301824. Its totient is φ = 64263360.

The previous prime is 122216201. The next prime is 122216219. The reversal of 122216205 is 502612221.

It is a happy number.

It is not a de Polignac number, because 122216205 - 2² = 122216201 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122216201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56314 + ... + 58443.

It is an arithmetic number, because the mean of its divisors is an integer number (12393864).

Almost surely, 2^122216205 is an apocalyptic number.

122216205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122216205 is a deficient number, since it is larger than the sum of its proper divisors (76085619).

122216205 is a wasteful number, since it uses less digits than its factorization.

122216205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114836.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 122216205 is about 11055.1438253873. The cubic root of 122216205 is about 496.2603734505.

Adding to 122216205 its reverse (502612221), we get a palindrome (624828426).

The spelling of 122216205 in words is "one hundred twenty-two million, two hundred sixteen thousand, two hundred five".