211066670512021 has 32 divisors (see below), whose sum is σ = 221426336102400. Its totient is φ = 200983987010880.

The previous prime is 211066670511989. The next prime is 211066670512037. The reversal of 211066670512021 is 120215076660112.

It is a cyclic number.

It is not a de Polignac number, because 211066670512021 - 2⁵ = 211066670511989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211066670512091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 894949206 + ... + 895185016.

It is an arithmetic number, because the mean of its divisors is an integer number (6919573003200).

Almost surely, 2^{211066670512021} is an apocalyptic number.

It is an amenable number.

211066670512021 is a deficient number, since it is larger than the sum of its proper divisors (10359665590379).

211066670512021 is a wasteful number, since it uses less digits than its factorization.

211066670512021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237729.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 211066670512021 in words is "two hundred eleven trillion, sixty-six billion, six hundred seventy million, five hundred twelve thousand, twenty-one".