20113320123 has 24 divisors (see below), whose sum is σ = 31292381120. Its totient is φ = 12375452160.

The previous prime is 20113320121. The next prime is 20113320151. The reversal of 20113320123 is 32102331102.

It is not a de Polignac number, because 20113320123 - 2¹ = 20113320121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20113320096 and 20113320105.

It is not an unprimeable number, because it can be changed into a prime (20113320121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1123563 + ... + 1141323.

Almost surely, 2^20113320123 is an apocalyptic number.

20113320123 is a deficient number, since it is larger than the sum of its proper divisors (11179060997).

20113320123 is a wasteful number, since it uses less digits than its factorization.

20113320123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27459 (or 27456 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20113320123 its reverse (32102331102), we get a palindrome (52215651225).

The spelling of 20113320123 in words is "twenty billion, one hundred thirteen million, three hundred twenty thousand, one hundred twenty-three".