122222210212 has 6 divisors (see below), whose sum is σ = 213888867878. Its totient is φ = 61111105104.

The previous prime is 122222210153. The next prime is 122222210213. The reversal of 122222210212 is 212012222221.

It can be written as a sum of positive squares in only one way, i.e., 83328059556 + 38894150656 = 288666^2 + 197216^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 122222210212.

It is not an unprimeable number, because it can be changed into a prime (122222210213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15277776273 + ... + 15277776280.

Almost surely, 2^122222210212 is an apocalyptic number.

It is an amenable number.

122222210212 is a deficient number, since it is larger than the sum of its proper divisors (91666657666).

122222210212 is a wasteful number, since it uses less digits than its factorization.

122222210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30555552557 (or 30555552555 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122222210212 its reverse (212012222221), we get a palindrome (334234432433).

The spelling of 122222210212 in words is "one hundred twenty-two billion, two hundred twenty-two million, two hundred ten thousand, two hundred twelve".