4423220223212 has 12 divisors (see below), whose sum is σ = 8846440446480. Its totient is φ = 1895665809936.

The previous prime is 4423220223211. The next prime is 4423220223251. The reversal of 4423220223212 is 2123220223244.

It is a happy number.

4423220223212 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (4423220223211) 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, 78986075387 + ... + 78986075442.

It is an arithmetic number, because the mean of its divisors is an integer number (737203370540).

Almost surely, 2^{4423220223212} is an apocalyptic number.

It is an amenable number.

4423220223212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4423220223212 is a wasteful number, since it uses less digits than its factorization.

4423220223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157972150840 (or 157972150838 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 4423220223212 its reverse (2123220223244), we get a palindrome (6546440446456).

The spelling of 4423220223212 in words is "four trillion, four hundred twenty-three billion, two hundred twenty million, two hundred twenty-three thousand, two hundred twelve".