211205212 has 24 divisors (see below), whose sum is σ = 398741616. Its totient is φ = 97513728.

The previous prime is 211205209. The next prime is 211205233. The reversal of 211205212 is 212502112.

It is a happy number.

It is a congruent number.

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, 25698 + ... + 32905.

It is an arithmetic number, because the mean of its divisors is an integer number (16614234).

Almost surely, 2^211205212 is an apocalyptic number.

It is an amenable number.

211205212 is a deficient number, since it is larger than the sum of its proper divisors (187536404).

211205212 is a wasteful number, since it uses less digits than its factorization.

211205212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58677 (or 58675 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 211205212 is about 14532.9010180349. The cubic root of 211205212 is about 595.5271199130.

Adding to 211205212 its reverse (212502112), we get a palindrome (423707324).

The spelling of 211205212 in words is "two hundred eleven million, two hundred five thousand, two hundred twelve".