12121204322 has 4 divisors (see below), whose sum is σ = 18181806486. Its totient is φ = 6060602160.

The previous prime is 12121204313. The next prime is 12121204331. The reversal of 12121204322 is 22340212121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22340212121 = 587 ⋅38058283.

It is an interprime number because it is at equal distance from previous prime (12121204313) and next prime (12121204331).

It can be written as a sum of positive squares in only one way, i.e., 9231174241 + 2890030081 = 96079^2 + 53759^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12121204294 and 12121204303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030301079 + ... + 3030301082.

Almost surely, 2^12121204322 is an apocalyptic number.

12121204322 is a deficient number, since it is larger than the sum of its proper divisors (6060602164).

12121204322 is an equidigital number, since it uses as much as digits as its factorization.

12121204322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060602163.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12121204322 its reverse (22340212121), we get a palindrome (34461416443).

The spelling of 12121204322 in words is "twelve billion, one hundred twenty-one million, two hundred four thousand, three hundred twenty-two".