201212223112 has 8 divisors (see below), whose sum is σ = 377272918350. Its totient is φ = 100606111552.

The previous prime is 201212223097. The next prime is 201212223197. The reversal of 201212223112 is 211322212102.

It can be written as a sum of positive squares in only one way, i.e., 116271452196 + 84940770916 = 340986^2 + 291446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 201212223112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12575763937 + ... + 12575763952.

Almost surely, 2^201212223112 is an apocalyptic number.

It is an amenable number.

201212223112 is a deficient number, since it is larger than the sum of its proper divisors (176060695238).

201212223112 is a wasteful number, since it uses less digits than its factorization.

201212223112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25151527895 (or 25151527891 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201212223112 its reverse (211322212102), we get a palindrome (412534435214).

The spelling of 201212223112 in words is "two hundred one billion, two hundred twelve million, two hundred twenty-three thousand, one hundred twelve".