212204434 has 16 divisors (see below), whose sum is σ = 346190040. Its totient is φ = 96969600.

The previous prime is 212204429. The next prime is 212204449. The reversal of 212204434 is 434402212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 206928225 + 5276209 = 14385^2 + 2297^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37779 + ... + 43030.

Almost surely, 2^212204434 is an apocalyptic number.

212204434 is a deficient number, since it is larger than the sum of its proper divisors (133985606).

212204434 is a wasteful number, since it uses less digits than its factorization.

212204434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80925.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 212204434 is about 14567.2383793223. The cubic root of 212204434 is about 596.4647985303.

Adding to 212204434 its reverse (434402212), we get a palindrome (646606646).

The spelling of 212204434 in words is "two hundred twelve million, two hundred four thousand, four hundred thirty-four".