212040204 has 12 divisors (see below), whose sum is σ = 494760504. Its totient is φ = 70680064.

The previous prime is 212040203. The next prime is 212040221. The reversal of 212040204 is 402040212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×212040204² = 89922096224723232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212040203) 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 3 ways as a sum of consecutive naturals, for example, 8834997 + ... + 8835020.

It is an arithmetic number, because the mean of its divisors is an integer number (41230042).

Almost surely, 2^212040204 is an apocalyptic number.

It is an amenable number.

212040204 is an abundant number, since it is smaller than the sum of its proper divisors (282720300).

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

212040204 is a wasteful number, since it uses less digits than its factorization.

212040204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17670024 (or 17670022 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 212040204 is about 14561.6003241402. The cubic root of 212040204 is about 596.3108861082.

Adding to 212040204 its reverse (402040212), we get a palindrome (614080416).

It can be divided in two parts, 2120 and 40204, that added together give a palindrome (42324).

The spelling of 212040204 in words is "two hundred twelve million, forty thousand, two hundred four".