20003211012123 has 12 divisors (see below), whose sum is σ = 28893772850280. Its totient is φ = 13335360546816.

The previous prime is 20003211012091. The next prime is 20003211012133. The reversal of 20003211012123 is 32121011230002.

20003211012123 is a `hidden beast` number, since 200 + 0 + 321 + 1 + 0 + 121 + 23 = 666.

It is not a de Polignac number, because 20003211012123 - 2⁵ = 20003211012091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20003211012096 and 20003211012105.

It is not an unprimeable number, because it can be changed into a prime (20003211012133) 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 11 ways as a sum of consecutive naturals, for example, 8331513 + ... + 10460426.

It is an arithmetic number, because the mean of its divisors is an integer number (2407814404190).

Almost surely, 2^{20003211012123} is an apocalyptic number.

20003211012123 is a deficient number, since it is larger than the sum of its proper divisors (8890561838157).

20003211012123 is a wasteful number, since it uses less digits than its factorization.

20003211012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18910218 (or 18910215 counting only the distinct ones).

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

Adding to 20003211012123 its reverse (32121011230002), we get a palindrome (52124222242125).

The spelling of 20003211012123 in words is "twenty trillion, three billion, two hundred eleven million, twelve thousand, one hundred twenty-three".