212311320222 has 64 divisors (see below), whose sum is σ = 431618575104. Its totient is φ = 69615237120.

The previous prime is 212311320187. The next prime is 212311320269. The reversal of 212311320222 is 222023113212.

It is a super-2 number, since 2×212311320222² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 83883097 + ... + 83885627.

It is an arithmetic number, because the mean of its divisors is an integer number (6744040236).

Almost surely, 2^212311320222 is an apocalyptic number.

212311320222 is an abundant number, since it is smaller than the sum of its proper divisors (219307254882).

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

212311320222 is a wasteful number, since it uses less digits than its factorization.

212311320222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 212311320222 its reverse (222023113212), we get a palindrome (434334433434).

The spelling of 212311320222 in words is "two hundred twelve billion, three hundred eleven million, three hundred twenty thousand, two hundred twenty-two".