212112322212 has 48 divisors (see below), whose sum is σ = 565655404160. Its totient is φ = 60601105152.

The previous prime is 212112322181. The next prime is 212112322231. The reversal of 212112322212 is 212223211212.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3974328 + ... + 4027344.

Almost surely, 2^212112322212 is an apocalyptic number.

It is an amenable number.

212112322212 is an abundant number, since it is smaller than the sum of its proper divisors (353543081948).

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

212112322212 is a wasteful number, since it uses less digits than its factorization.

212112322212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100660 (or 100658 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

Adding to 212112322212 its reverse (212223211212), we get a palindrome (424335533424).

The spelling of 212112322212 in words is "two hundred twelve billion, one hundred twelve million, three hundred twenty-two thousand, two hundred twelve".