22212102012 has 24 divisors (see below), whose sum is σ = 54876958416. Its totient is φ = 6968502528.

The previous prime is 22212101993. The next prime is 22212102013. The reversal of 22212102012 is 21020121222.

It is a junction number, because it is equal to n+sod(n) for n = 22212101982 and 22212102000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212102013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54441223 + ... + 54441630.

It is an arithmetic number, because the mean of its divisors is an integer number (2286539934).

Almost surely, 2^22212102012 is an apocalyptic number.

It is an amenable number.

22212102012 is an abundant number, since it is smaller than the sum of its proper divisors (32664856404).

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

22212102012 is a wasteful number, since it uses less digits than its factorization.

22212102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108882877 (or 108882875 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22212102012 its reverse (21020121222), we get a palindrome (43232223234).

It can be divided in two parts, 2221210 and 2012, that added together give a palindrome (2223222).

The spelling of 22212102012 in words is "twenty-two billion, two hundred twelve million, one hundred two thousand, twelve".