12121311004 has 36 divisors (see below), whose sum is σ = 23383509912. Its totient is φ = 5493732640.

The previous prime is 12121310969. The next prime is 12121311113. The reversal of 12121311004 is 40011312121.

12121311004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 131862 + ... + 204034.

It is an arithmetic number, because the mean of its divisors is an integer number (649541942).

Almost surely, 2^12121311004 is an apocalyptic number.

It is an amenable number.

12121311004 is a deficient number, since it is larger than the sum of its proper divisors (11262198908).

12121311004 is a wasteful number, since it uses less digits than its factorization.

12121311004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72546 (or 72533 counting only the distinct ones).

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

Adding to 12121311004 its reverse (40011312121), we get a palindrome (52132623125).

The spelling of 12121311004 in words is "twelve billion, one hundred twenty-one million, three hundred eleven thousand, four".