1200321201012 has 24 divisors (see below), whose sum is σ = 2800781018112. Its totient is φ = 400102560000.

The previous prime is 1200321200933. The next prime is 1200321201019. The reversal of 1200321201012 is 2101021230021.

It is a junction number, because it is equal to n+sod(n) for n = 1200321200982 and 1200321201000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200321201019) 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, 651012 + ... + 1680612.

It is an arithmetic number, because the mean of its divisors is an integer number (116699209088).

Almost surely, 2^{1200321201012} is an apocalyptic number.

1200321201012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200321201012 is an abundant number, since it is smaller than the sum of its proper divisors (1600459817100).

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

1200321201012 is a wasteful number, since it uses less digits than its factorization.

1200321201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126759 (or 1126757 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1200321201012 its reverse (2101021230021), we get a palindrome (3301342431033).

The spelling of 1200321201012 in words is "one trillion, two hundred billion, three hundred twenty-one million, two hundred one thousand, twelve".