1311020120001 has 16 divisors (see below), whose sum is σ = 1754978822784. Its totient is φ = 870543066624.

The previous prime is 1311020119973. The next prime is 1311020120027. The reversal of 1311020120001 is 1000210201131.

It is not a de Polignac number, because 1311020120001 - 2⁹ = 1311020119489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311020120051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222940 + ... + 1634546.

It is an arithmetic number, because the mean of its divisors is an integer number (109686176424).

Almost surely, 2^{1311020120001} is an apocalyptic number.

It is an amenable number.

1311020120001 is a deficient number, since it is larger than the sum of its proper divisors (443958702783).

1311020120001 is a wasteful number, since it uses less digits than its factorization.

1311020120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412840.

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

Adding to 1311020120001 its reverse (1000210201131), we get a palindrome (2311230321132).

The spelling of 1311020120001 in words is "one trillion, three hundred eleven billion, twenty million, one hundred twenty thousand, one".