211222202122212 has 12 divisors (see below), whose sum is σ = 492851804951856. Its totient is φ = 70407400707400.

The previous prime is 211222202122181. The next prime is 211222202122237. The reversal of 211222202122212 is 212221202222112.

It is a happy number.

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

It is a super-2 number, since 2×211222202122212² (a number of 29 digits) contains 22 as substring.

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, 8800925088414 + ... + 8800925088437.

It is an arithmetic number, because the mean of its divisors is an integer number (41070983745988).

Almost surely, 2^{211222202122212} is an apocalyptic number.

It is an amenable number.

211222202122212 is an abundant number, since it is smaller than the sum of its proper divisors (281629602829644).

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

211222202122212 is a wasteful number, since it uses less digits than its factorization.

211222202122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17601850176858 (or 17601850176856 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 211222202122212 its reverse (212221202222112), we get a palindrome (423443404344324).

The spelling of 211222202122212 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred two million, one hundred twenty-two thousand, two hundred twelve".