1212231122012 has 24 divisors (see below), whose sum is σ = 2181165104832. Its totient is φ = 589150195200.

The previous prime is 1212231121993. The next prime is 1212231122059. The reversal of 1212231122012 is 2102211322121.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13593293 + ... + 13682180.

It is an arithmetic number, because the mean of its divisors is an integer number (90881879368).

Almost surely, 2^{1212231122012} is an apocalyptic number.

It is an amenable number.

1212231122012 is a deficient number, since it is larger than the sum of its proper divisors (968933982820).

1212231122012 is a wasteful number, since it uses less digits than its factorization.

1212231122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27275789 (or 27275787 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1212231122012 its reverse (2102211322121), we get a palindrome (3314442444133).

The spelling of 1212231122012 in words is "one trillion, two hundred twelve billion, two hundred thirty-one million, one hundred twenty-two thousand, twelve".