12121242330 has 16 divisors (see below), whose sum is σ = 29090981664. Its totient is φ = 3232331280.

The previous prime is 12121242283. The next prime is 12121242349. The reversal of 12121242330 is 3324212121.

It is a junction number, because it is equal to n+sod(n) for n = 12121242297 and 12121242306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202020676 + ... + 202020735.

It is an arithmetic number, because the mean of its divisors is an integer number (1818186354).

Almost surely, 2^12121242330 is an apocalyptic number.

12121242330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121242330 is an abundant number, since it is smaller than the sum of its proper divisors (16969739334).

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

12121242330 is a wasteful number, since it uses less digits than its factorization.

12121242330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404041421.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12121242330 its reverse (3324212121), we get a palindrome (15445454451).

The spelling of 12121242330 in words is "twelve billion, one hundred twenty-one million, two hundred forty-two thousand, three hundred thirty".