22011212120212 has 96 divisors (see below), whose sum is σ = 46289672110080. Its totient is φ = 8959399200000.

The previous prime is 22011212120203. The next prime is 22011212120257. The reversal of 22011212120212 is 21202121211022.

It is a self number, because there is not a number n which added to its sum of digits gives 22011212120212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30420837 + ... + 31135987.

It is an arithmetic number, because the mean of its divisors is an integer number (482184084480).

Almost surely, 2^{22011212120212} 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 22011212120212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23144836055040).

22011212120212 is an abundant number, since it is smaller than the sum of its proper divisors (24278459989868).

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

22011212120212 is a wasteful number, since it uses less digits than its factorization.

22011212120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715853 (or 715851 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22011212120212 its reverse (21202121211022), we get a palindrome (43213333331234).

The spelling of 22011212120212 in words is "twenty-two trillion, eleven billion, two hundred twelve million, one hundred twenty thousand, two hundred twelve".