1243223001044 has 24 divisors (see below), whose sum is σ = 2187952704000. Its totient is φ = 618103582560.

The previous prime is 1243223001019. The next prime is 1243223001047. The reversal of 1243223001044 is 4401003223421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243223001047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739172 + ... + 1741499.

It is an arithmetic number, because the mean of its divisors is an integer number (91164696000).

Almost surely, 2^{1243223001044} is an apocalyptic number.

It is an amenable number.

1243223001044 is a deficient number, since it is larger than the sum of its proper divisors (944729702956).

1243223001044 is a wasteful number, since it uses less digits than its factorization.

1243223001044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481383 (or 2481381 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1243223001044 its reverse (4401003223421), we get a palindrome (5644226224465).

The spelling of 1243223001044 in words is "one trillion, two hundred forty-three billion, two hundred twenty-three million, one thousand, forty-four".