2222120101212 has 144 divisors (see below), whose sum is σ = 6422012513280. Its totient is φ = 641279548800.

The previous prime is 2222120101207. The next prime is 2222120101219. The reversal of 2222120101212 is 2121010212222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222120101219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1553037 + ... + 2618427.

It is an arithmetic number, because the mean of its divisors is an integer number (44597309120).

Almost surely, 2^{2222120101212} is an apocalyptic number.

2222120101212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2222120101212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3211006256640).

2222120101212 is an abundant number, since it is smaller than the sum of its proper divisors (4199892412068).

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

2222120101212 is a wasteful number, since it uses less digits than its factorization.

2222120101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065664 (or 1065659 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2222120101212 its reverse (2121010212222), we get a palindrome (4343130313434).

The spelling of 2222120101212 in words is "two trillion, two hundred twenty-two billion, one hundred twenty million, one hundred one thousand, two hundred twelve".