12021103121012 has 12 divisors (see below), whose sum is σ = 22144137328320. Its totient is φ = 5694206741496.

The previous prime is 12021103121011. The next prime is 12021103121047. The reversal of 12021103121012 is 21012130112021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021103121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79086204668 + ... + 79086204819.

It is an arithmetic number, because the mean of its divisors is an integer number (1845344777360).

Almost surely, 2^{12021103121012} is an apocalyptic number.

It is an amenable number.

12021103121012 is a deficient number, since it is larger than the sum of its proper divisors (10123034207308).

12021103121012 is a wasteful number, since it uses less digits than its factorization.

12021103121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158172409510 (or 158172409508 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12021103121012 its reverse (21012130112021), we get a palindrome (33033233233033).

The spelling of 12021103121012 in words is "twelve trillion, twenty-one billion, one hundred three million, one hundred twenty-one thousand, twelve".