1200303021312 has 72 divisors (see below), whose sum is σ = 3549507218880. Its totient is φ = 400101004800.

The previous prime is 1200303021311. The next prime is 1200303021317. The reversal of 1200303021312 is 2131203030021.

1200303021312 is a `hidden beast` number, since 1 + 20 + 0 + 30 + 302 + 1 + 312 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200303021311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86820564 + ... + 86834387.

Almost surely, 2^{1200303021312} is an apocalyptic number.

1200303021312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200303021312 is an abundant number, since it is smaller than the sum of its proper divisors (2349204197568).

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

1200303021312 is an equidigital number, since it uses as much as digits as its factorization.

1200303021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173654976 (or 173654956 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1200303021312 its reverse (2131203030021), we get a palindrome (3331506051333).

The spelling of 1200303021312 in words is "one trillion, two hundred billion, three hundred three million, twenty-one thousand, three hundred twelve".