1223043344040 has 256 divisors, whose sum is σ = 4483920913920. Its totient is φ = 260503142400.

The previous prime is 1223043344027. The next prime is 1223043344051. The reversal of 1223043344040 is 404433403221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1223043343989 and 1223043344007.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1018284 + ... + 1866276.

It is an arithmetic number, because the mean of its divisors is an integer number (17515316070).

Almost surely, 2^{1223043344040} is an apocalyptic number.

1223043344040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223043344040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2241960456960).

1223043344040 is an abundant number, since it is smaller than the sum of its proper divisors (3260877569880).

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

1223043344040 is a wasteful number, since it uses less digits than its factorization.

1223043344040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848132 (or 848128 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 1223043344040 its reverse (404433403221), we get a palindrome (1627476747261).

The spelling of 1223043344040 in words is "one trillion, two hundred twenty-three billion, forty-three million, three hundred forty-four thousand, forty".