212442206 has 4 divisors (see below), whose sum is σ = 318663312. Its totient is φ = 106221102.

The previous prime is 212442161. The next prime is 212442227. The reversal of 212442206 is 602244212.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53110550 + ... + 53110553.

It is an arithmetic number, because the mean of its divisors is an integer number (79665828).

Almost surely, 2^212442206 is an apocalyptic number.

212442206 is a deficient number, since it is larger than the sum of its proper divisors (106221106).

212442206 is a wasteful number, since it uses less digits than its factorization.

212442206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106221105.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 212442206 is about 14575.3972844654. The cubic root of 212442206 is about 596.6874921035.

Adding to 212442206 its reverse (602244212), we get a palindrome (814686418).

The spelling of 212442206 in words is "two hundred twelve million, four hundred forty-two thousand, two hundred six".