212223112122 has 32 divisors (see below), whose sum is σ = 485347663872. Its totient is φ = 60601891824.

The previous prime is 212223112103. The next prime is 212223112151. The reversal of 212223112122 is 221211322212.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1309318 + ... + 1462449.

It is an arithmetic number, because the mean of its divisors is an integer number (15167114496).

Almost surely, 2^212223112122 is an apocalyptic number.

212223112122 is an abundant number, since it is smaller than the sum of its proper divisors (273124551750).

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

212223112122 is a wasteful number, since it uses less digits than its factorization.

212223112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773602.

The product of its digits is 384, while the sum is 21.

Adding to 212223112122 its reverse (221211322212), we get a palindrome (433434434334).

The spelling of 212223112122 in words is "two hundred twelve billion, two hundred twenty-three million, one hundred twelve thousand, one hundred twenty-two".