212202113223212 has 192 divisors, whose sum is σ = 449018364211200. Its totient is φ = 85868891596800.

The previous prime is 212202113223211. The next prime is 212202113223229. The reversal of 212202113223212 is 212322311202212.

It is not an unprimeable number, because it can be changed into a prime (212202113223211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1132381739 + ... + 1132569117.

It is an arithmetic number, because the mean of its divisors is an integer number (2338637313600).

Almost surely, 2^{212202113223212} 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 212202113223212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224509182105600).

212202113223212 is an abundant number, since it is smaller than the sum of its proper divisors (236816250987988).

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

212202113223212 is a wasteful number, since it uses less digits than its factorization.

212202113223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187744 (or 187742 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 212202113223212 its reverse (212322311202212), we get a palindrome (424524424425424).

The spelling of 212202113223212 in words is "two hundred twelve trillion, two hundred two billion, one hundred thirteen million, two hundred twenty-three thousand, two hundred twelve".