22121102212 has 36 divisors (see below), whose sum is σ = 43737731856. Its totient is φ = 9708304480.

The previous prime is 22121102197. The next prime is 22121102251. The reversal of 22121102212 is 21220112122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261898 + ... + 335905.

It is an arithmetic number, because the mean of its divisors is an integer number (1214936996).

Almost surely, 2^22121102212 is an apocalyptic number.

22121102212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22121102212 is a deficient number, since it is larger than the sum of its proper divisors (21616629644).

22121102212 is a wasteful number, since it uses less digits than its factorization.

22121102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597876 (or 597845 counting only the distinct ones).

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

Adding to 22121102212 its reverse (21220112122), we get a palindrome (43341214334).

The spelling of 22121102212 in words is "twenty-two billion, one hundred twenty-one million, one hundred two thousand, two hundred twelve".