1223430444444 has 48 divisors (see below), whose sum is σ = 3255100013088. Its totient is φ = 354296598528.

The previous prime is 1223430444407. The next prime is 1223430444491. The reversal of 1223430444444 is 4444440343221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230659197 + ... + 230664500.

It is an arithmetic number, because the mean of its divisors is an integer number (67814583606).

Almost surely, 2^{1223430444444} is an apocalyptic number.

It is an amenable number.

1223430444444 is an abundant number, since it is smaller than the sum of its proper divisors (2031669568644).

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

1223430444444 is a wasteful number, since it uses less digits than its factorization.

1223430444444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461323734 (or 461323732 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 39.

Adding to 1223430444444 its reverse (4444440343221), we get a palindrome (5667870787665).

The spelling of 1223430444444 in words is "one trillion, two hundred twenty-three billion, four hundred thirty million, four hundred forty-four thousand, four hundred forty-four".