1311232120002 has 96 divisors (see below), whose sum is σ = 3479596952832. Its totient is φ = 348664010112.

The previous prime is 1311232119997. The next prime is 1311232120021. The reversal of 1311232120002 is 2000212321131.

1311232120002 is a `hidden beast` number, since 1 + 311 + 232 + 120 + 0 + 0 + 2 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6007113 + ... + 6221564.

It is an arithmetic number, because the mean of its divisors is an integer number (36245801592).

Almost surely, 2^{1311232120002} is an apocalyptic number.

1311232120002 is an abundant number, since it is smaller than the sum of its proper divisors (2168364832830).

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

1311232120002 is a wasteful number, since it uses less digits than its factorization.

1311232120002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12228752 (or 12228749 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1311232120002 its reverse (2000212321131), we get a palindrome (3311444441133).

The spelling of 1311232120002 in words is "one trillion, three hundred eleven billion, two hundred thirty-two million, one hundred twenty thousand, two".