212422412 has 12 divisors (see below), whose sum is σ = 393606360. Its totient is φ = 99963456.

The previous prime is 212422409. The next prime is 212422417. The reversal of 212422412 is 214224212.

It is a super-4 number, since 4×212422412⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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

It is not an unprimeable number, because it can be changed into a prime (212422417) 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 3 ways as a sum of consecutive naturals, for example, 1561862 + ... + 1561997.

It is an arithmetic number, because the mean of its divisors is an integer number (32800530).

Almost surely, 2^212422412 is an apocalyptic number.

It is an amenable number.

212422412 is a deficient number, since it is larger than the sum of its proper divisors (181183948).

212422412 is a wasteful number, since it uses less digits than its factorization.

212422412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123880 (or 3123878 counting only the distinct ones).

The product of its digits is 512, while the sum is 20.

The square root of 212422412 is about 14574.7182477055. The cubic root of 212422412 is about 596.6689596921.

Adding to 212422412 its reverse (214224212), we get a palindrome (426646624).

The spelling of 212422412 in words is "two hundred twelve million, four hundred twenty-two thousand, four hundred twelve".