12121211230 has 32 divisors (see below), whose sum is σ = 21999260448. Its totient is φ = 4808294400.

The previous prime is 12121211173. The next prime is 12121211233. The reversal of 12121211230 is 3211212121.

12121211230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12121211230² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121211233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3604750 + ... + 3608110.

It is an arithmetic number, because the mean of its divisors is an integer number (687476889).

Almost surely, 2^12121211230 is an apocalyptic number.

12121211230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121211230 is a deficient number, since it is larger than the sum of its proper divisors (9878049218).

12121211230 is a wasteful number, since it uses less digits than its factorization.

12121211230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6252.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12121211230 its reverse (3211212121), we get a palindrome (15332423351).

The spelling of 12121211230 in words is "twelve billion, one hundred twenty-one million, two hundred eleven thousand, two hundred thirty".