2212120212222 has 48 divisors (see below), whose sum is σ = 4861860784560. Its totient is φ = 670067500032.

The previous prime is 2212120212199. The next prime is 2212120212223. The reversal of 2212120212222 is 2222120212122.

It is a super-2 number, since 2×2212120212222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212120212223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21945103 + ... + 22045674.

It is an arithmetic number, because the mean of its divisors is an integer number (101288766345).

Almost surely, 2^{2212120212222} is an apocalyptic number.

2212120212222 is an abundant number, since it is smaller than the sum of its proper divisors (2649740572338).

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

2212120212222 is a wasteful number, since it uses less digits than its factorization.

2212120212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43990845 (or 43990828 counting only the distinct ones).

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

Adding to 2212120212222 its reverse (2222120212122), we get a palindrome (4434240424344).

The spelling of 2212120212222 in words is "two trillion, two hundred twelve billion, one hundred twenty million, two hundred twelve thousand, two hundred twenty-two".