1239228720000 has 1200 divisors, whose sum is σ = 4785814143000. Its totient is φ = 318193920000.

The previous prime is 1239228719999. The next prime is 1239228720097. The reversal of 1239228720000 is 278229321.

It is a tau number, because it is divible by the number of its divisors (1200).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 149 ways as a sum of consecutive naturals, for example, 6227279901 + ... + 6227280099.

Almost surely, 2^{1239228720000} is an apocalyptic number.

1239228720000 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 1239228720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2392907071500).

1239228720000 is an abundant number, since it is smaller than the sum of its proper divisors (3546585423000).

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

1239228720000 is an frugal number, since it uses more digits than its factorization.

1239228720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 1239228720000 in words is "one trillion, two hundred thirty-nine billion, two hundred twenty-eight million, seven hundred twenty thousand".