20123320001011 has 4 divisors (see below), whose sum is σ = 20142800466712. Its totient is φ = 20103839535312.

The previous prime is 20123320001003. The next prime is 20123320001051. The reversal of 20123320001011 is 11010002332102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20123320001011 - 2³ = 20123320001003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123320001051) 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 3 ways as a sum of consecutive naturals, for example, 9740231301 + ... + 9740233366.

It is an arithmetic number, because the mean of its divisors is an integer number (5035700116678).

Almost surely, 2^{20123320001011} is an apocalyptic number.

20123320001011 is a deficient number, since it is larger than the sum of its proper divisors (19480465701).

20123320001011 is a wasteful number, since it uses less digits than its factorization.

20123320001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19480465700.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20123320001011 its reverse (11010002332102), we get a palindrome (31133322333113).

The spelling of 20123320001011 in words is "twenty trillion, one hundred twenty-three billion, three hundred twenty million, one thousand, eleven".