12020123100 has 144 divisors (see below), whose sum is σ = 36122688000. Its totient is φ = 3083781120.

The previous prime is 12020123069. The next prime is 12020123113. The reversal of 12020123100 is 132102021.

12020123100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12020123100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 47 ways as a sum of consecutive naturals, for example, 824676 + ... + 839124.

It is an arithmetic number, because the mean of its divisors is an integer number (250852000).

Almost surely, 2^12020123100 is an apocalyptic number.

12020123100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12020123100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18061344000).

12020123100 is an abundant number, since it is smaller than the sum of its proper divisors (24102564900).

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

12020123100 is a wasteful number, since it uses less digits than its factorization.

12020123100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14572 (or 14565 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12020123100 its reverse (132102021), we get a palindrome (12152225121).

The spelling of 12020123100 in words is "twelve billion, twenty million, one hundred twenty-three thousand, one hundred".