1223040445012 has 24 divisors (see below), whose sum is σ = 2177032838400. Its totient is φ = 601035209856.

The previous prime is 1223040445009. The next prime is 1223040445049. The reversal of 1223040445012 is 2105440403221.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 669564 + ... + 1701292.

It is an arithmetic number, because the mean of its divisors is an integer number (90709701600).

Almost surely, 2^{1223040445012} is an apocalyptic number.

It is an amenable number.

1223040445012 is a deficient number, since it is larger than the sum of its proper divisors (953992393388).

1223040445012 is a wasteful number, since it uses less digits than its factorization.

1223040445012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036815 (or 1036813 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 1223040445012 its reverse (2105440403221), we get a palindrome (3328480848233).

The spelling of 1223040445012 in words is "one trillion, two hundred twenty-three billion, forty million, four hundred forty-five thousand, twelve".