223440344212 has 24 divisors (see below), whose sum is σ = 395052033600. Its totient is φ = 110570329920.

The previous prime is 223440344207. The next prime is 223440344233. The reversal of 223440344212 is 212443044322.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200137 + ... + 697807.

It is an arithmetic number, because the mean of its divisors is an integer number (16460501400).

Almost surely, 2^223440344212 is an apocalyptic number.

It is an amenable number.

223440344212 is a deficient number, since it is larger than the sum of its proper divisors (171611689388).

223440344212 is a wasteful number, since it uses less digits than its factorization.

223440344212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498831 (or 498829 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 223440344212 its reverse (212443044322), we get a palindrome (435883388534).

The spelling of 223440344212 in words is "two hundred twenty-three billion, four hundred forty million, three hundred forty-four thousand, two hundred twelve".