212423202 has 32 divisors (see below), whose sum is σ = 488332800. Its totient is φ = 68365584.

The previous prime is 212423161. The next prime is 212423203. The reversal of 212423202 is 202324212.

212423202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (212423203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66258 + ... + 69389.

It is an arithmetic number, because the mean of its divisors is an integer number (15260400).

Almost surely, 2^212423202 is an apocalyptic number.

212423202 is an abundant number, since it is smaller than the sum of its proper divisors (275909598).

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

212423202 is a wasteful number, since it uses less digits than its factorization.

212423202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135687 (or 135681 counting only the distinct ones).

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

The square root of 212423202 is about 14574.7453494049. The cubic root of 212423202 is about 596.6696993628.

Adding to 212423202 its reverse (202324212), we get a palindrome (414747414).

The spelling of 212423202 in words is "two hundred twelve million, four hundred twenty-three thousand, two hundred two".