12210312011212 has 24 divisors (see below), whose sum is σ = 24834532907520. Its totient is φ = 5144296100880.

The previous prime is 12210312011179. The next prime is 12210312011297. The reversal of 12210312011212 is 21211021301221.

It is a super-2 number, since 2×12210312011212² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12210312011212.

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, 3695613364 + ... + 3695616667.

It is an arithmetic number, because the mean of its divisors is an integer number (1034772204480).

Almost surely, 2^{12210312011212} is an apocalyptic number.

It is an amenable number.

12210312011212 is an abundant number, since it is smaller than the sum of its proper divisors (12624220896308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12210312011212 is a wasteful number, since it uses less digits than its factorization.

12210312011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7391230101 (or 7391230099 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12210312011212 its reverse (21211021301221), we get a palindrome (33421333312433).

The spelling of 12210312011212 in words is "twelve trillion, two hundred ten billion, three hundred twelve million, eleven thousand, two hundred twelve".