2122222221012 has 96 divisors (see below), whose sum is σ = 5267676927744. Its totient is φ = 662682009600.

The previous prime is 2122222220983. The next prime is 2122222221059. The reversal of 2122222221012 is 2101222222212.

It is a self number, because there is not a number n which added to its sum of digits gives 2122222221012.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 102299913 + ... + 102320655.

It is an arithmetic number, because the mean of its divisors is an integer number (54871634664).

Almost surely, 2^{2122222221012} 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 2122222221012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2633838463872).

2122222221012 is an abundant number, since it is smaller than the sum of its proper divisors (3145454706732).

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

2122222221012 is a wasteful number, since it uses less digits than its factorization.

2122222221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23089 (or 23087 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2122222221012 its reverse (2101222222212), we get a palindrome (4223444443224).

The spelling of 2122222221012 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, twelve".