211066612 has 6 divisors (see below), whose sum is σ = 369366578. Its totient is φ = 105533304.

The previous prime is 211066571. The next prime is 211066633. The reversal of 211066612 is 216660112.

It can be written as a sum of positive squares in only one way, i.e., 116510436 + 94556176 = 10794^2 + 9724^2 .

It is a super-2 number, since 2×211066612² = 89098229402317088, which contains 22 as substring.

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, 26383323 + ... + 26383330.

Almost surely, 2^211066612 is an apocalyptic number.

It is an amenable number.

211066612 is a deficient number, since it is larger than the sum of its proper divisors (158299966).

211066612 is a wasteful number, since it uses less digits than its factorization.

211066612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52766657 (or 52766655 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 211066612 is about 14528.1317449974. The cubic root of 211066612 is about 595.3968230644.

The spelling of 211066612 in words is "two hundred eleven million, sixty-six thousand, six hundred twelve".