212211323 has 24 divisors (see below), whose sum is σ = 239755680. Its totient is φ = 187142400.

The previous prime is 212211277. The next prime is 212211331. The reversal of 212211323 is 323112212.

It is a de Polignac number, because none of the positive numbers 2^k-212211323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (212211343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 926573 + ... + 926801.

It is an arithmetic number, because the mean of its divisors is an integer number (9989820).

Almost surely, 2^212211323 is an apocalyptic number.

212211323 is a deficient number, since it is larger than the sum of its proper divisors (27544357).

212211323 is a wasteful number, since it uses less digits than its factorization.

212211323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 416 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 212211323 is about 14567.4748326537. The cubic root of 212211323 is about 596.4712530004.

Adding to 212211323 its reverse (323112212), we get a palindrome (535323535).

The spelling of 212211323 in words is "two hundred twelve million, two hundred eleven thousand, three hundred twenty-three".