22111333212 has 48 divisors (see below), whose sum is σ = 52269829920. Its totient is φ = 7274299392.

The previous prime is 22111333187. The next prime is 22111333217. The reversal of 22111333212 is 21233311122.

It is a super-2 number, since 2×22111333212² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111333217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303268 + ... + 369044.

It is an arithmetic number, because the mean of its divisors is an integer number (1088954790).

Almost surely, 2^22111333212 is an apocalyptic number.

It is an amenable number.

22111333212 is an abundant number, since it is smaller than the sum of its proper divisors (30158496708).

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

22111333212 is a wasteful number, since it uses less digits than its factorization.

22111333212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66150 (or 66148 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 22111333212 its reverse (21233311122), we get a palindrome (43344644334).

The spelling of 22111333212 in words is "twenty-two billion, one hundred eleven million, three hundred thirty-three thousand, two hundred twelve".