2311123220001 has 6 divisors (see below), whose sum is σ = 3338289095570. Its totient is φ = 1540748813328.

The previous prime is 2311123219967. The next prime is 2311123220027. The reversal of 2311123220001 is 1000223211132.

2311123220001 is a `hidden beast` number, since 231 + 1 + 1 + 232 + 200 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2310631045776 + 492174225 = 1520076^2 + 22185^2 .

It is not a de Polignac number, because 2311123220001 - 2²³ = 2311114831393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311123220071) 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 5 ways as a sum of consecutive naturals, for example, 128395734436 + ... + 128395734453.

Almost surely, 2^{2311123220001} is an apocalyptic number.

It is an amenable number.

2311123220001 is a deficient number, since it is larger than the sum of its proper divisors (1027165875569).

2311123220001 is a wasteful number, since it uses less digits than its factorization.

2311123220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256791468895 (or 256791468892 counting only the distinct ones).

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

Adding to 2311123220001 its reverse (1000223211132), we get a palindrome (3311346431133).

The spelling of 2311123220001 in words is "two trillion, three hundred eleven billion, one hundred twenty-three million, two hundred twenty thousand, one".