12121041224 has 8 divisors (see below), whose sum is σ = 22726952310. Its totient is φ = 6060520608.

The previous prime is 12121041211. The next prime is 12121041227. The reversal of 12121041224 is 42214012121.

It can be written as a sum of positive squares in only one way, i.e., 7758438724 + 4362602500 = 88082^2 + 66050^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 12121041196 and 12121041205.

It is not an unprimeable number, because it can be changed into a prime (12121041227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 757565069 + ... + 757565084.

Almost surely, 2^12121041224 is an apocalyptic number.

It is an amenable number.

12121041224 is a deficient number, since it is larger than the sum of its proper divisors (10605911086).

12121041224 is a wasteful number, since it uses less digits than its factorization.

12121041224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515130159 (or 1515130155 counting only the distinct ones).

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

Adding to 12121041224 its reverse (42214012121), we get a palindrome (54335053345).

The spelling of 12121041224 in words is "twelve billion, one hundred twenty-one million, forty-one thousand, two hundred twenty-four".