123020013012 has 48 divisors (see below), whose sum is σ = 309797951232. Its totient is φ = 37770180480.

The previous prime is 123020012981. The next prime is 123020013019. The reversal of 123020013012 is 210310020321.

It is a junction number, because it is equal to n+sod(n) for n = 123020012982 and 123020013000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123020013019) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 783388 + ... + 927219.

It is an arithmetic number, because the mean of its divisors is an integer number (6454123984).

Almost surely, 2^123020013012 is an apocalyptic number.

123020013012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123020013012 is an abundant number, since it is smaller than the sum of its proper divisors (186777938220).

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

123020013012 is a wasteful number, since it uses less digits than its factorization.

123020013012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711088 (or 1711086 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 123020013012 its reverse (210310020321), we get a palindrome (333330033333).

The spelling of 123020013012 in words is "one hundred twenty-three billion, twenty million, thirteen thousand, twelve".