22211112212 has 6 divisors (see below), whose sum is σ = 38869446378. Its totient is φ = 11105556104.

The previous prime is 22211112197. The next prime is 22211112227. The reversal of 22211112212 is 21221111222.

It is an interprime number because it is at equal distance from previous prime (22211112197) and next prime (22211112227).

It can be written as a sum of positive squares in only one way, i.e., 21610176016 + 600936196 = 147004^2 + 24514^2 .

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2776389023 + ... + 2776389030.

It is an arithmetic number, because the mean of its divisors is an integer number (6478241063).

Almost surely, 2^22211112212 is an apocalyptic number.

It is an amenable number.

22211112212 is a deficient number, since it is larger than the sum of its proper divisors (16658334166).

22211112212 is a wasteful number, since it uses less digits than its factorization.

22211112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5552778057 (or 5552778055 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

Adding to 22211112212 its reverse (21221111222), we get a palindrome (43432223434).

The spelling of 22211112212 in words is "twenty-two billion, two hundred eleven million, one hundred twelve thousand, two hundred twelve".