1311201010012 has 24 divisors (see below), whose sum is σ = 2301638613120. Its totient is φ = 653593058160.

The previous prime is 1311201009971. The next prime is 1311201010037. The reversal of 1311201010012 is 2100101021131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1311201009974 and 1311201010001.

It is a congruent number.

It is an unprimeable number.

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, 1321087 + ... + 2089897.

It is an arithmetic number, because the mean of its divisors is an integer number (95901608880).

Almost surely, 2^{1311201010012} is an apocalyptic number.

It is an amenable number.

1311201010012 is a deficient number, since it is larger than the sum of its proper divisors (990437603108).

1311201010012 is a wasteful number, since it uses less digits than its factorization.

1311201010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770121 (or 770119 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1311201010012 its reverse (2100101021131), we get a palindrome (3411302031143).

The spelling of 1311201010012 in words is "one trillion, three hundred eleven billion, two hundred one million, ten thousand, twelve".