12021123001311 has 12 divisors (see below), whose sum is σ = 17364306223888. Its totient is φ = 8013868821504.

The previous prime is 12021123001297. The next prime is 12021123001357. The reversal of 12021123001311 is 11310032112021.

12021123001311 is a `hidden beast` number, since 1 + 20 + 21 + 12 + 300 + 1 + 311 = 666.

It is not a de Polignac number, because 12021123001311 - 2⁷ = 12021123001183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021123006311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17407435 + ... + 18084828.

Almost surely, 2^{12021123001311} is an apocalyptic number.

12021123001311 is a deficient number, since it is larger than the sum of its proper divisors (5343183222577).

12021123001311 is a wasteful number, since it uses less digits than its factorization.

12021123001311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35529902 (or 35529899 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12021123001311 its reverse (11310032112021), we get a palindrome (23331155113332).

The spelling of 12021123001311 in words is "twelve trillion, twenty-one billion, one hundred twenty-three million, one thousand, three hundred eleven".