223042321212 has 12 divisors (see below), whose sum is σ = 520432082856. Its totient is φ = 74347440400.

The previous prime is 223042321171. The next prime is 223042321213. The reversal of 223042321212 is 212123240322.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223042321213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9293430039 + ... + 9293430062.

It is an arithmetic number, because the mean of its divisors is an integer number (43369340238).

Almost surely, 2^223042321212 is an apocalyptic number.

It is an amenable number.

223042321212 is an abundant number, since it is smaller than the sum of its proper divisors (297389761644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223042321212 is a wasteful number, since it uses less digits than its factorization.

223042321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18586860108 (or 18586860106 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 223042321212 its reverse (212123240322), we get a palindrome (435165561534).

The spelling of 223042321212 in words is "two hundred twenty-three billion, forty-two million, three hundred twenty-one thousand, two hundred twelve".