212422530 has 32 divisors (see below), whose sum is σ = 515548800. Its totient is φ = 56008832.

The previous prime is 212422523. The next prime is 212422543. The reversal of 212422530 is 35224212.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212422497 and 212422506.

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 15 ways as a sum of consecutive naturals, for example, 37110 + ... + 42449.

It is an arithmetic number, because the mean of its divisors is an integer number (16110900).

Almost surely, 2^212422530 is an apocalyptic number.

212422530 is an abundant number, since it is smaller than the sum of its proper divisors (303126270).

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

212422530 is a wasteful number, since it uses less digits than its factorization.

212422530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79658.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 212422530 is about 14574.7222958106. The cubic root of 212422530 is about 596.6690701747.

Adding to 212422530 its reverse (35224212), we get a palindrome (247646742).

The spelling of 212422530 in words is "two hundred twelve million, four hundred twenty-two thousand, five hundred thirty".