22112121122212 has 12 divisors (see below), whose sum is σ = 42214049415216. Its totient is φ = 10050964146440.

The previous prime is 22112121122197. The next prime is 22112121122227. The reversal of 22112121122212 is 21222112121122.

It is an interprime number because it is at equal distance from previous prime (22112121122197) and next prime (22112121122227).

It is a Harshad number since it is a multiple of its sum of digits (22).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251274103618 + ... + 251274103705.

It is an arithmetic number, because the mean of its divisors is an integer number (3517837451268).

Almost surely, 2^{22112121122212} is an apocalyptic number.

22112121122212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22112121122212 is a deficient number, since it is larger than the sum of its proper divisors (20101928293004).

22112121122212 is a wasteful number, since it uses less digits than its factorization.

22112121122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502548207338 (or 502548207336 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 22112121122212 its reverse (21222112121122), we get a palindrome (43334233243334).

It can be divided in two parts, 22112121122 and 212, that multiplied together give a palindrome (4687769677864).

The spelling of 22112121122212 in words is "twenty-two trillion, one hundred twelve billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".