12020003100 has 360 divisors, whose sum is σ = 44767134720. Its totient is φ = 2732849280.

The previous prime is 12020003081. The next prime is 12020003123. The reversal of 12020003100 is 130002021.

It is a happy number.

It is a super-2 number, since 2×12020003100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 13550857 + ... + 13551743.

It is an arithmetic number, because the mean of its divisors is an integer number (124353152).

Almost surely, 2^12020003100 is an apocalyptic number.

12020003100 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 12020003100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22383567360).

12020003100 is an abundant number, since it is smaller than the sum of its proper divisors (32747131620).

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

12020003100 is a wasteful number, since it uses less digits than its factorization.

12020003100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 12020003100 its reverse (130002021), we get a palindrome (12150005121).

The spelling of 12020003100 in words is "twelve billion, twenty million, three thousand, one hundred".