212312422 has 64 divisors (see below), whose sum is σ = 419904000. Its totient is φ = 78285312.

The previous prime is 212312417. The next prime is 212312431. The reversal of 212312422 is 224213212.

212312422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 212312422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130329 + ... + 131947.

It is an arithmetic number, because the mean of its divisors is an integer number (6561000).

Almost surely, 2^212312422 is an apocalyptic number.

212312422 is a deficient number, since it is larger than the sum of its proper divisors (207591578).

212312422 is a wasteful number, since it uses less digits than its factorization.

212312422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693.

The product of its digits is 384, while the sum is 19.

The square root of 212312422 is about 14570.9444443385. The cubic root of 212312422 is about 596.5659590269.

Adding to 212312422 its reverse (224213212), we get a palindrome (436525634).

It can be divided in two parts, 21231 and 2422, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 212312422 in words is "two hundred twelve million, three hundred twelve thousand, four hundred twenty-two".