212204104 has 48 divisors (see below), whose sum is σ = 464111100. Its totient is φ = 90695808.

The previous prime is 212204101. The next prime is 212204137. The reversal of 212204104 is 401402212.

212204104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 209960100 + 2244004 = 14490^2 + 1498^2 .

It is not an unprimeable number, because it can be changed into a prime (212204101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255562 + ... + 256390.

Almost surely, 2^212204104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212204104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232055550).

212204104 is an abundant number, since it is smaller than the sum of its proper divisors (251906996).

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

212204104 is a wasteful number, since it uses less digits than its factorization.

212204104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 212204104 is about 14567.2270525313. The cubic root of 212204104 is about 596.4644893418.

Adding to 212204104 its reverse (401402212), we get a palindrome (613606316).

The spelling of 212204104 in words is "two hundred twelve million, two hundred four thousand, one hundred four".