211222110221072 has 20 divisors (see below), whose sum is σ = 411693394478016. Its totient is φ = 104978653581600.

The previous prime is 211222110221071. The next prime is 211222110221137. The reversal of 211222110221072 is 270122011222112.

It is a happy number.

It is a super-2 number, since 2×211222110221072² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222110221071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39525092804 + ... + 39525098147.

Almost surely, 2^{211222110221072} is an apocalyptic number.

It is an amenable number.

211222110221072 is a deficient number, since it is larger than the sum of its proper divisors (200471284256944).

211222110221072 is a wasteful number, since it uses less digits than its factorization.

211222110221072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79050191126 (or 79050191120 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

Adding to 211222110221072 its reverse (270122011222112), we get a palindrome (481344121443184).

The spelling of 211222110221072 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty-one thousand, seventy-two".