12121204330 has 32 divisors (see below), whose sum is σ = 22383844560. Its totient is φ = 4723130880.

The previous prime is 12121204313. The next prime is 12121204331. The reversal of 12121204330 is 3340212121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5631451849 + 6489752481 = 75043^2 + 80559^2 .

It is a super-2 number, since 2×12121204330² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12121204298 and 12121204307.

It is not an unprimeable number, because it can be changed into a prime (12121204331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255736 + ... + 299404.

Almost surely, 2^12121204330 is an apocalyptic number.

12121204330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121204330 is a deficient number, since it is larger than the sum of its proper divisors (10262640230).

12121204330 is a wasteful number, since it uses less digits than its factorization.

12121204330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44394.

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

Adding to 12121204330 its reverse (3340212121), we get a palindrome (15461416451).

The spelling of 12121204330 in words is "twelve billion, one hundred twenty-one million, two hundred four thousand, three hundred thirty".