223012121212 has 6 divisors (see below), whose sum is σ = 390271212128. Its totient is φ = 111506060604.

The previous prime is 223012121179. The next prime is 223012121221. The reversal of 223012121212 is 212121210322.

It is a self number, because there is not a number n which added to its sum of digits gives 223012121212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27876515148 + ... + 27876515155.

Almost surely, 2^223012121212 is an apocalyptic number.

It is an amenable number.

223012121212 is a deficient number, since it is larger than the sum of its proper divisors (167259090916).

223012121212 is a wasteful number, since it uses less digits than its factorization.

223012121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55753030307 (or 55753030305 counting only the distinct ones).

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

Adding to 223012121212 its reverse (212121210322), we get a palindrome (435133331534).

The spelling of 223012121212 in words is "two hundred twenty-three billion, twelve million, one hundred twenty-one thousand, two hundred twelve".