211222112220012 has 24 divisors (see below), whose sum is σ = 506171908564336. Its totient is φ = 68504468827968.

The previous prime is 211222112220011. The next prime is 211222112220089. The reversal of 211222112220012 is 210022211222112.

It is a super-2 number, since 2×211222112220012² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222112220011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237862738543 + ... + 237862739430.

Almost surely, 2^{211222112220012} is an apocalyptic number.

It is an amenable number.

211222112220012 is an abundant number, since it is smaller than the sum of its proper divisors (294949796344324).

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

211222112220012 is a wasteful number, since it uses less digits than its factorization.

211222112220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475725478017 (or 475725478015 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211222112220012 its reverse (210022211222112), we get a palindrome (421244323442124).

The spelling of 211222112220012 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred twelve million, two hundred twenty thousand, twelve".