12042121012 has 12 divisors (see below), whose sum is σ = 21089968900. Its totient is φ = 6016415616.

The previous prime is 12042120943. The next prime is 12042121051. The reversal of 12042121012 is 21012124021.

12042121012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6150637476 + 5891483536 = 78426^2 + 76756^2 .

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 3 ways as a sum of consecutive naturals, for example, 1155387 + ... + 1165762.

Almost surely, 2^12042121012 is an apocalyptic number.

It is an amenable number.

12042121012 is a deficient number, since it is larger than the sum of its proper divisors (9047847888).

12042121012 is a wasteful number, since it uses less digits than its factorization.

12042121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322450 (or 2322448 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12042121012 its reverse (21012124021), we get a palindrome (33054245033).

The spelling of 12042121012 in words is "twelve billion, forty-two million, one hundred twenty-one thousand, twelve".