212122223331312 has 40 divisors (see below), whose sum is σ = 626265611741056. Its totient is φ = 60606349523136.

The previous prime is 212122223331311. The next prime is 212122223331433. The reversal of 212122223331312 is 213133322221212.

It is a happy number.

It is a super-3 number, since 3×212122223331312³ (a number of 44 digits) contains 333 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 212122223331312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122223331311) 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 7 ways as a sum of consecutive naturals, for example, 315658070098 + ... + 315658070769.

Almost surely, 2^{212122223331312} is an apocalyptic number.

It is an amenable number.

212122223331312 is an abundant number, since it is smaller than the sum of its proper divisors (414143388409744).

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

212122223331312 is a wasteful number, since it uses less digits than its factorization.

212122223331312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631316140885 (or 631316140879 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

Adding to 212122223331312 its reverse (213133322221212), we get a palindrome (425255545552524).

The spelling of 212122223331312 in words is "two hundred twelve trillion, one hundred twenty-two billion, two hundred twenty-three million, three hundred thirty-one thousand, three hundred twelve".