22122120212 has 12 divisors (see below), whose sum is σ = 38755842720. Its totient is φ = 11049022296.

The previous prime is 22122120197. The next prime is 22122120271. The reversal of 22122120212 is 21202122122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3005318 + ... + 3012669.

It is an arithmetic number, because the mean of its divisors is an integer number (3229653560).

Almost surely, 2^22122120212 is an apocalyptic number.

It is an amenable number.

22122120212 is a deficient number, since it is larger than the sum of its proper divisors (16633722508).

22122120212 is a wasteful number, since it uses less digits than its factorization.

22122120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6018910 (or 6018908 counting only the distinct ones).

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

Adding to 22122120212 its reverse (21202122122), we get a palindrome (43324242334).

The spelling of 22122120212 in words is "twenty-two billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twelve".