12121303030 has 32 divisors (see below), whose sum is σ = 21990129408. Its totient is φ = 4810428000.

The previous prime is 12121303021. The next prime is 12121303069. The reversal of 12121303030 is 3030312121.

It is a junction number, because it is equal to n+sod(n) for n = 12121302995 and 12121303013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1328785 + ... + 1337875.

It is an arithmetic number, because the mean of its divisors is an integer number (687191544).

Almost surely, 2^12121303030 is an apocalyptic number.

12121303030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121303030 is a deficient number, since it is larger than the sum of its proper divisors (9868826378).

12121303030 is a wasteful number, since it uses less digits than its factorization.

12121303030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10132.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 12121303030 its reverse (3030312121), we get a palindrome (15151615151).

Subtracting from 12121303030 its reverse (3030312121), we obtain a palindrome (9090990909).

The spelling of 12121303030 in words is "twelve billion, one hundred twenty-one million, three hundred three thousand, thirty".