12121131124304 has 20 divisors (see below), whose sum is σ = 23504577018900. Its totient is φ = 6055433829120.

The previous prime is 12121131124283. The next prime is 12121131124313. The reversal of 12121131124304 is 40342113112121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11330952357904 + 790178766400 = 3366148^2 + 888920^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 320713829 + ... + 320751620.

It is an arithmetic number, because the mean of its divisors is an integer number (1175228850945).

Almost surely, 2^{12121131124304} is an apocalyptic number.

It is an amenable number.

12121131124304 is a deficient number, since it is larger than the sum of its proper divisors (11383445894596).

12121131124304 is a wasteful number, since it uses less digits than its factorization.

12121131124304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641466638 (or 641466632 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 12121131124304 its reverse (40342113112121), we get a palindrome (52463244236425).

The spelling of 12121131124304 in words is "twelve trillion, one hundred twenty-one billion, one hundred thirty-one million, one hundred twenty-four thousand, three hundred four".