20023120012 has 12 divisors (see below), whose sum is σ = 40046240080. Its totient is φ = 8581337136.

The previous prime is 20023120003. The next prime is 20023120031. The reversal of 20023120012 is 21002132002.

20023120012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20023119974 and 20023120001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357555687 + ... + 357555742.

Almost surely, 2^20023120012 is an apocalyptic number.

It is an amenable number.

20023120012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20023120012 is a wasteful number, since it uses less digits than its factorization.

20023120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715111440 (or 715111438 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20023120012 its reverse (21002132002), we get a palindrome (41025252014).

The spelling of 20023120012 in words is "twenty billion, twenty-three million, one hundred twenty thousand, twelve".