212112222322 has 64 divisors (see below), whose sum is σ = 427274072064. Its totient is φ = 76269291840.

The previous prime is 212112222271. The next prime is 212112222323. The reversal of 212112222322 is 223222211212.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 212112222293 and 212112222302.

It is not an unprimeable number, because it can be changed into a prime (212112222323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20220963 + ... + 20231449.

It is an arithmetic number, because the mean of its divisors is an integer number (6676157376).

Almost surely, 2^212112222322 is an apocalyptic number.

212112222322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212112222322 is an abundant number, since it is smaller than the sum of its proper divisors (215161849742).

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

212112222322 is a wasteful number, since it uses less digits than its factorization.

212112222322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20623.

The product of its digits is 768, while the sum is 22.

Adding to 212112222322 its reverse (223222211212), we get a palindrome (435334433534).

It can be divided in two parts, 212112 and 222322, that added together give a palindrome (434434).

The spelling of 212112222322 in words is "two hundred twelve billion, one hundred twelve million, two hundred twenty-two thousand, three hundred twenty-two".