12121210244 has 48 divisors (see below), whose sum is σ = 24931670400. Its totient is φ = 5083549440.

The previous prime is 12121210229. The next prime is 12121210247. The reversal of 12121210244 is 44201212121.

It is not an unprimeable number, because it can be changed into a prime (12121210247) 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, 2069432 + ... + 2075280.

It is an arithmetic number, because the mean of its divisors is an integer number (519409800).

Almost surely, 2^12121210244 is an apocalyptic number.

It is an amenable number.

12121210244 is an abundant number, since it is smaller than the sum of its proper divisors (12810460156).

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

12121210244 is a wasteful number, since it uses less digits than its factorization.

12121210244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9500 (or 9498 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12121210244 its reverse (44201212121), we get a palindrome (56322422365).

The spelling of 12121210244 in words is "twelve billion, one hundred twenty-one million, two hundred ten thousand, two hundred forty-four".