212202242 has 24 divisors (see below), whose sum is σ = 370782720. Its totient is φ = 90818280.

The previous prime is 212202239. The next prime is 212202247. The reversal of 212202242 is 242202212.

It is a self number, because there is not a number n which added to its sum of digits gives 212202242.

It is not an unprimeable number, because it can be changed into a prime (212202247) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 119759 + ... + 121517.

It is an arithmetic number, because the mean of its divisors is an integer number (15449280).

Almost surely, 2^212202242 is an apocalyptic number.

212202242 is a deficient number, since it is larger than the sum of its proper divisors (158580478).

212202242 is a wasteful number, since it uses less digits than its factorization.

212202242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006 (or 2999 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 212202242 is about 14567.1631418063. The cubic root of 212202242 is about 596.4627447634.

Adding to 212202242 its reverse (242202212), we get a palindrome (454404454).

The spelling of 212202242 in words is "two hundred twelve million, two hundred two thousand, two hundred forty-two".