212422320 has 120 divisors (see below), whose sum is σ = 778267152. Its totient is φ = 51494400.

The previous prime is 212422307. The next prime is 212422333. The reversal of 212422320 is 23224212.

212422320 is a `hidden beast` number, since 212 + 422 + 32 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (212422307) and next prime (212422333).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212422293 and 212422302.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5491 + ... + 21330.

Almost surely, 2^212422320 is an apocalyptic number.

212422320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212422320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389133576).

212422320 is an abundant number, since it is smaller than the sum of its proper divisors (565844832).

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

212422320 is a wasteful number, since it uses less digits than its factorization.

212422320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26851 (or 26842 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 212422320 is about 14574.7150915550. The cubic root of 212422320 is about 596.6688735531.

Adding to 212422320 its reverse (23224212), we get a palindrome (235646532).

The spelling of 212422320 in words is "two hundred twelve million, four hundred twenty-two thousand, three hundred twenty".