12005205030 has 96 divisors (see below), whose sum is σ = 38416682304. Its totient is φ = 2532964608.

The previous prime is 12005205011. The next prime is 12005205031. The reversal of 12005205030 is 3050250021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12005204994 and 12005205012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12005205031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 724729 + ... + 741108.

It is an arithmetic number, because the mean of its divisors is an integer number (400173774).

Almost surely, 2^12005205030 is an apocalyptic number.

12005205030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12005205030 is an abundant number, since it is smaller than the sum of its proper divisors (26411477274).

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

12005205030 is a wasteful number, since it uses less digits than its factorization.

12005205030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465870 (or 1465867 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

Adding to 12005205030 its reverse (3050250021), we get a palindrome (15055455051).

The spelling of 12005205030 in words is "twelve billion, five million, two hundred five thousand, thirty".