20123012120 has 32 divisors (see below), whose sum is σ = 45286769520. Its totient is φ = 8047428480.

The previous prime is 20123012111. The next prime is 20123012153. The reversal of 20123012120 is 2121032102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20123012095 and 20123012104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136175 + ... + 242465.

Almost surely, 2^20123012120 is an apocalyptic number.

20123012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123012120 is an abundant number, since it is smaller than the sum of its proper divisors (25163757400).

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

20123012120 is a wasteful number, since it uses less digits than its factorization.

20123012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111035 (or 111031 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20123012120 its reverse (2121032102), we get a palindrome (22244044222).

The spelling of 20123012120 in words is "twenty billion, one hundred twenty-three million, twelve thousand, one hundred twenty".