12012200321 has 8 divisors (see below), whose sum is σ = 13105747488. Its totient is φ = 10918908000.

The previous prime is 12012200237. The next prime is 12012200329. The reversal of 12012200321 is 12300221021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12012200321 - 2³⁰ = 10938458497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012200296 and 12012200305.

It is not an unprimeable number, because it can be changed into a prime (12012200329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42566 + ... + 160736.

It is an arithmetic number, because the mean of its divisors is an integer number (1638218436).

Almost surely, 2^12012200321 is an apocalyptic number.

12012200321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12012200321 is a deficient number, since it is larger than the sum of its proper divisors (1093547167).

12012200321 is a wasteful number, since it uses less digits than its factorization.

12012200321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127423.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12012200321 its reverse (12300221021), we get a palindrome (24312421342).

The spelling of 12012200321 in words is "twelve billion, twelve million, two hundred thousand, three hundred twenty-one".