212212323 has 12 divisors (see below), whose sum is σ = 306946848. Its totient is φ = 141282000.

The previous prime is 212212313. The next prime is 212212331. The reversal of 212212323 is 323212212.

It is not a de Polignac number, because 212212323 - 2⁴ = 212212307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212212296 and 212212305.

It is not an unprimeable number, because it can be changed into a prime (212212313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8940 + ... + 22457.

It is an arithmetic number, because the mean of its divisors is an integer number (25578904).

Almost surely, 2^212212323 is an apocalyptic number.

212212323 is a deficient number, since it is larger than the sum of its proper divisors (94734525).

212212323 is a wasteful number, since it uses less digits than its factorization.

212212323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32154 (or 32151 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 212212323 is about 14567.5091556518. The cubic root of 212212323 is about 596.4721899129.

Adding to 212212323 its reverse (323212212), we get a palindrome (535424535).

The spelling of 212212323 in words is "two hundred twelve million, two hundred twelve thousand, three hundred twenty-three".