1212211022012 has 24 divisors (see below), whose sum is σ = 2230500488832. Its totient is φ = 575327495600.

The previous prime is 1212211021993. The next prime is 1212211022041. The reversal of 1212211022012 is 2102201122121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50278814 + ... + 50302917.

It is an arithmetic number, because the mean of its divisors is an integer number (92937520368).

Almost surely, 2^{1212211022012} is an apocalyptic number.

It is an amenable number.

1212211022012 is a deficient number, since it is larger than the sum of its proper divisors (1018289466820).

1212211022012 is a wasteful number, since it uses less digits than its factorization.

1212211022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100581889 (or 100581887 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212211022012 its reverse (2102201122121), we get a palindrome (3314412144133).

The spelling of 1212211022012 in words is "one trillion, two hundred twelve billion, two hundred eleven million, twenty-two thousand, twelve".