12021222122012 has 96 divisors (see below), whose sum is σ = 21657753384960. Its totient is φ = 5836773841920.

The previous prime is 12021222121949. The next prime is 12021222122017. The reversal of 12021222122012 is 21022122212021.

12021222122012 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 not an unprimeable number, because it can be changed into a prime (12021222122017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2591336789 + ... + 2591341427.

It is an arithmetic number, because the mean of its divisors is an integer number (225601597760).

Almost surely, 2^{12021222122012} is an apocalyptic number.

It is an amenable number.

12021222122012 is a deficient number, since it is larger than the sum of its proper divisors (9636531262948).

12021222122012 is a wasteful number, since it uses less digits than its factorization.

12021222122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5371 (or 5369 counting only the distinct ones).

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

Adding to 12021222122012 its reverse (21022122212021), we get a palindrome (33043344334033).

Subtracting 12021222122012 from its reverse (21022122212021), we obtain a palindrome (9000900090009).

The spelling of 12021222122012 in words is "twelve trillion, twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, twelve".