212011205 has 16 divisors (see below), whose sum is σ = 297851904. Its totient is φ = 141832320.

The previous prime is 212011193. The next prime is 212011207. The reversal of 212011205 is 502110212.

It is not a de Polignac number, because 212011205 - 2¹⁴ = 211994821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72437 + ... + 75306.

It is an arithmetic number, because the mean of its divisors is an integer number (18615744).

Almost surely, 2^212011205 is an apocalyptic number.

It is an amenable number.

212011205 is a deficient number, since it is larger than the sum of its proper divisors (85840699).

212011205 is a wasteful number, since it uses less digits than its factorization.

212011205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147796.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 212011205 is about 14560.6045547566. The cubic root of 212011205 is about 596.2837006855.

Adding to 212011205 its reverse (502110212), we get a palindrome (714121417).

The spelling of 212011205 in words is "two hundred twelve million, eleven thousand, two hundred five".