223021310212 has 12 divisors (see below), whose sum is σ = 390686774940. Its totient is φ = 111396517376.

The previous prime is 223021310209. The next prime is 223021310219. The reversal of 223021310212 is 212013120322.

It can be written as a sum of positive squares in 2 ways, for example, as 149663754496 + 73357555716 = 386864^2 + 270846^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 223021310212.

It is not an unprimeable number, because it can be changed into a prime (223021310219) 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 in 3 ways as a sum of consecutive naturals, for example, 28530037 + ... + 28537852.

It is an arithmetic number, because the mean of its divisors is an integer number (32557231245).

Almost surely, 2^223021310212 is an apocalyptic number.

It is an amenable number.

223021310212 is a deficient number, since it is larger than the sum of its proper divisors (167665464728).

223021310212 is a wasteful number, since it uses less digits than its factorization.

223021310212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57068870 (or 57068868 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 223021310212 its reverse (212013120322), we get a palindrome (435034430534).

The spelling of 223021310212 in words is "two hundred twenty-three billion, twenty-one million, three hundred ten thousand, two hundred twelve".