12204130321 has 4 divisors (see below), whose sum is σ = 12272310000. Its totient is φ = 12135950644.

The previous prime is 12204130297. The next prime is 12204130381. The reversal of 12204130321 is 12303140221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12303140221 = 31 ⋅396875491.

It is a cyclic number.

It is not a de Polignac number, because 12204130321 - 2⁷ = 12204130193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12204130381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34089571 + ... + 34089928.

It is an arithmetic number, because the mean of its divisors is an integer number (3068077500).

Almost surely, 2^12204130321 is an apocalyptic number.

It is an amenable number.

12204130321 is a deficient number, since it is larger than the sum of its proper divisors (68179679).

12204130321 is an equidigital number, since it uses as much as digits as its factorization.

12204130321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68179678.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12204130321 its reverse (12303140221), we get a palindrome (24507270542).

The spelling of 12204130321 in words is "twelve billion, two hundred four million, one hundred thirty thousand, three hundred twenty-one".