22102121212 has 12 divisors (see below), whose sum is σ = 39926412736. Its totient is φ = 10694574720.

The previous prime is 22102121201. The next prime is 22102121213. The reversal of 22102121212 is 21212120122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102121213) 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 3 ways as a sum of consecutive naturals, for example, 89121333 + ... + 89121580.

Almost surely, 2^22102121212 is an apocalyptic number.

It is an amenable number.

22102121212 is a deficient number, since it is larger than the sum of its proper divisors (17824291524).

22102121212 is a wasteful number, since it uses less digits than its factorization.

22102121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178242948 (or 178242946 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22102121212 its reverse (21212120122), we get a palindrome (43314241334).

The spelling of 22102121212 in words is "twenty-two billion, one hundred two million, one hundred twenty-one thousand, two hundred twelve".