212444666444212 has 24 divisors (see below), whose sum is σ = 372007012608000. Its totient is φ = 106156954241376.

The previous prime is 212444666444203. The next prime is 212444666444239.

212444666444212 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×212444666444212² (a number of 29 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 212444666444212.

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, 151271598 + ... + 152669530.

It is an arithmetic number, because the mean of its divisors is an integer number (15500292192000).

Almost surely, 2^{212444666444212} is an apocalyptic number.

It is an amenable number.

212444666444212 is a deficient number, since it is larger than the sum of its proper divisors (159562346163788).

212444666444212 is a wasteful number, since it uses less digits than its factorization.

212444666444212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421295 (or 1421293 counting only the distinct ones).

The product of its digits is 14155776, while the sum is 52.

The spelling of 212444666444212 in words is "two hundred twelve trillion, four hundred forty-four billion, six hundred sixty-six million, four hundred forty-four thousand, two hundred twelve".