22122010212 has 12 divisors (see below), whose sum is σ = 51618023856. Its totient is φ = 7374003400.

The previous prime is 22122010193. The next prime is 22122010241. The reversal of 22122010212 is 21201022122.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 22122010191 and 22122010200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921750414 + ... + 921750437.

It is an arithmetic number, because the mean of its divisors is an integer number (4301501988).

Almost surely, 2^22122010212 is an apocalyptic number.

It is an amenable number.

22122010212 is an abundant number, since it is smaller than the sum of its proper divisors (29496013644).

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

22122010212 is a wasteful number, since it uses less digits than its factorization.

22122010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843500858 (or 1843500856 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22122010212 its reverse (21201022122), we get a palindrome (43323032334).

The spelling of 22122010212 in words is "twenty-two billion, one hundred twenty-two million, ten thousand, two hundred twelve".