212320052 has 24 divisors (see below), whose sum is σ = 430981824. Its totient is φ = 89635392.

The previous prime is 212320037. The next prime is 212320081. The reversal of 212320052 is 250023212.

It is a self number, because there is not a number n which added to its sum of digits gives 212320052.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54713 + ... + 58464.

It is an arithmetic number, because the mean of its divisors is an integer number (17957576).

Almost surely, 2^212320052 is an apocalyptic number.

It is an amenable number.

212320052 is an abundant number, since it is smaller than the sum of its proper divisors (218661772).

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

212320052 is a wasteful number, since it uses less digits than its factorization.

212320052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113255 (or 113253 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 212320052 is about 14571.2062644106. The cubic root of 212320052 is about 596.5731053253.

Adding to 212320052 its reverse (250023212), we get a palindrome (462343264).

The spelling of 212320052 in words is "two hundred twelve million, three hundred twenty thousand, fifty-two".