1243223300000 has 288 divisors, whose sum is σ = 3345345759168. Its totient is φ = 451008000000.

The previous prime is 1243223299999. The next prime is 1243223300027. The reversal of 1243223300000 is 33223421.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 575298920 + ... + 575301080.

It is an arithmetic number, because the mean of its divisors is an integer number (11615783886).

Almost surely, 2^{1243223300000} is an apocalyptic number.

1243223300000 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 1243223300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1672672879584).

1243223300000 is an abundant number, since it is smaller than the sum of its proper divisors (2102122459168).

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

1243223300000 is an equidigital number, since it uses as much as digits as its factorization.

1243223300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730 (or 2702 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 1243223300000 its reverse (33223421), we get a palindrome (1243256523421).

The spelling of 1243223300000 in words is "one trillion, two hundred forty-three billion, two hundred twenty-three million, three hundred thousand".