1200200312320 has 80 divisors (see below), whose sum is σ = 2900327367168. Its totient is φ = 476299837440.

The previous prime is 1200200312287. The next prime is 1200200312327. The reversal of 1200200312320 is 232130020021.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1200200312294 and 1200200312303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200200312327) 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, 1520661 + ... + 2170900.

Almost surely, 2^{1200200312320} is an apocalyptic number.

1200200312320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200200312320 is an abundant number, since it is smaller than the sum of its proper divisors (1700127054848).

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

1200200312320 is an equidigital number, since it uses as much as digits as its factorization.

1200200312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691711 (or 3691695 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1200200312320 its reverse (232130020021), we get a palindrome (1432330332341).

The spelling of 1200200312320 in words is "one trillion, two hundred billion, two hundred million, three hundred twelve thousand, three hundred twenty".