211122222111212 has 72 divisors (see below), whose sum is σ = 405608776180608. Its totient is φ = 96034538649600.

The previous prime is 211122222111211. The next prime is 211122222111221. The reversal of 211122222111212 is 212111222221112.

It is a super-2 number, since 2×211122222111212² (a number of 29 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (211122222111211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27274262 + ... + 34148642.

Almost surely, 2^{211122222111212} is an apocalyptic number.

It is an amenable number.

211122222111212 is a deficient number, since it is larger than the sum of its proper divisors (194486554069396).

211122222111212 is a wasteful number, since it uses less digits than its factorization.

211122222111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6875307 (or 6875288 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

Adding to 211122222111212 its reverse (212111222221112), we get a palindrome (423233444332324).

The spelling of 211122222111212 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twelve".