212422664 has 64 divisors (see below), whose sum is σ = 433520640. Its totient is φ = 97289280.

The previous prime is 212422663. The next prime is 212422673. The reversal of 212422664 is 466224212.

It is not an unprimeable number, because it can be changed into a prime (212422663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 952457 + ... + 952679.

It is an arithmetic number, because the mean of its divisors is an integer number (6773760).

Almost surely, 2^212422664 is an apocalyptic number.

It is an amenable number.

212422664 is an abundant number, since it is smaller than the sum of its proper divisors (221097976).

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

212422664 is a wasteful number, since it uses less digits than its factorization.

212422664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 446 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 212422664 is about 14574.7268928100. The cubic root of 212422664 is about 596.6691956379.

Adding to 212422664 its reverse (466224212), we get a palindrome (678646876).

The spelling of 212422664 in words is "two hundred twelve million, four hundred twenty-two thousand, six hundred sixty-four".