212210212312 has 128 divisors (see below), whose sum is σ = 478255104000. Its totient is φ = 86358666240.

The previous prime is 212210212297. The next prime is 212210212327. The reversal of 212210212312 is 213212012212.

It is an interprime number because it is at equal distance from previous prime (212210212297) and next prime (212210212327).

It is a self number, because there is not a number n which added to its sum of digits gives 212210212312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27602533 + ... + 27610219.

It is an arithmetic number, because the mean of its divisors is an integer number (3736368000).

Almost surely, 2^212210212312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212210212312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239127552000).

212210212312 is an abundant number, since it is smaller than the sum of its proper divisors (266044891688).

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

212210212312 is a wasteful number, since it uses less digits than its factorization.

212210212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8009 (or 8005 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212210212312 its reverse (213212012212), we get a palindrome (425422224524).

The spelling of 212210212312 in words is "two hundred twelve billion, two hundred ten million, two hundred twelve thousand, three hundred twelve".