1200005000000 has 224 divisors, whose sum is σ = 3005725117824. Its totient is φ = 475304000000.

The previous prime is 1200004999997. The next prime is 1200005000003. The reversal of 1200005000000 is 5000021.

It is an interprime number because it is at equal distance from previous prime (1200004999997) and next prime (1200005000003).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200005000003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 534998879 + ... + 535001121.

Almost surely, 2^{1200005000000} is an apocalyptic number.

1200005000000 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 1200005000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1502862558912).

1200005000000 is an abundant number, since it is smaller than the sum of its proper divisors (1805720117824).

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

1200005000000 is an frugal number, since it uses more digits than its factorization.

1200005000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 8.

The spelling of 1200005000000 in words is "one trillion, two hundred billion, five million", and thus it is an aban number.