212111012122012 has 24 divisors (see below), whose sum is σ = 376426665175680. Its totient is φ = 104560570529520.

The previous prime is 212111012121979. The next prime is 212111012122043. The reversal of 212111012122012 is 210221210111212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20860983 + ... + 29315569.

It is an arithmetic number, because the mean of its divisors is an integer number (15684444382320).

Almost surely, 2^{212111012122012} is an apocalyptic number.

It is an amenable number.

212111012122012 is a deficient number, since it is larger than the sum of its proper divisors (164315653053668).

212111012122012 is a wasteful number, since it uses less digits than its factorization.

212111012122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8543001 (or 8542999 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212111012122012 its reverse (210221210111212), we get a palindrome (422332222233224).

The spelling of 212111012122012 in words is "two hundred twelve trillion, one hundred eleven billion, twelve million, one hundred twenty-two thousand, twelve".