22012122212 has 12 divisors (see below), whose sum is σ = 40548646320. Its totient is φ = 10426794696.

The previous prime is 22012122211. The next prime is 22012122227. The reversal of 22012122212 is 21222121022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22012122211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144816518 + ... + 144816669.

It is an arithmetic number, because the mean of its divisors is an integer number (3379053860).

Almost surely, 2^22012122212 is an apocalyptic number.

It is an amenable number.

22012122212 is a deficient number, since it is larger than the sum of its proper divisors (18536524108).

22012122212 is a wasteful number, since it uses less digits than its factorization.

22012122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289633210 (or 289633208 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22012122212 its reverse (21222121022), we get a palindrome (43234243234).

The spelling of 22012122212 in words is "twenty-two billion, twelve million, one hundred twenty-two thousand, two hundred twelve".