12020131123 has 32 divisors (see below), whose sum is σ = 16151063040. Its totient is φ = 8639343360.

The previous prime is 12020131103. The next prime is 12020131127. The reversal of 12020131123 is 32113102021.

12020131123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12020131123 - 2²⁵ = 11986576691 is a prime.

It is a super-2 number, since 2×12020131123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12020131097 and 12020131106.

It is not an unprimeable number, because it can be changed into a prime (12020131127) 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 31 ways as a sum of consecutive naturals, for example, 1616911 + ... + 1624327.

It is an arithmetic number, because the mean of its divisors is an integer number (504720720).

Almost surely, 2^12020131123 is an apocalyptic number.

12020131123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12020131123 is a deficient number, since it is larger than the sum of its proper divisors (4130931917).

12020131123 is a wasteful number, since it uses less digits than its factorization.

12020131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9067.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12020131123 its reverse (32113102021), we get a palindrome (44133233144).

The spelling of 12020131123 in words is "twelve billion, twenty million, one hundred thirty-one thousand, one hundred twenty-three".