212313223122 has 64 divisors (see below), whose sum is σ = 570127832064. Its totient is φ = 50904267840.

The previous prime is 212313223121. The next prime is 212313223127. The reversal of 212313223122 is 221322313212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212313223092 and 212313223101.

It is not an unprimeable number, because it can be changed into a prime (212313223121) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 17669088 + ... + 17681099.

It is an arithmetic number, because the mean of its divisors is an integer number (8908247376).

Almost surely, 2^212313223122 is an apocalyptic number.

212313223122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212313223122 is an abundant number, since it is smaller than the sum of its proper divisors (357814608942).

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

212313223122 is a wasteful number, since it uses less digits than its factorization.

212313223122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35350223.

The product of its digits is 1728, while the sum is 24.

Adding to 212313223122 its reverse (221322313212), we get a palindrome (433635536334).

The spelling of 212313223122 in words is "two hundred twelve billion, three hundred thirteen million, two hundred twenty-three thousand, one hundred twenty-two".