12030202530 has 48 divisors (see below), whose sum is σ = 32357103480. Its totient is φ = 3097430784.

The previous prime is 12030202477. The next prime is 12030202543. The reversal of 12030202530 is 3520203021.

It can be written as a sum of positive squares in 4 ways, for example, as 10313011809 + 1717190721 = 101553^2 + 41439^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2302027 + ... + 2307246.

Almost surely, 2^12030202530 is an apocalyptic number.

12030202530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12030202530 is an abundant number, since it is smaller than the sum of its proper divisors (20326900950).

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

12030202530 is a wasteful number, since it uses less digits than its factorization.

12030202530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609315 (or 4609312 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 12030202530 its reverse (3520203021), we get a palindrome (15550405551).

The spelling of 12030202530 in words is "twelve billion, thirty million, two hundred two thousand, five hundred thirty".