221667166070711 has 8 divisors (see below), whose sum is σ = 235196403649920. Its totient is φ = 208192372104448.

The previous prime is 221667166070687. The next prime is 221667166070737. The reversal of 221667166070711 is 117070661766122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221667166070711 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 (221667166078711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13610894846 + ... + 13610911131.

It is an arithmetic number, because the mean of its divisors is an integer number (29399550456240).

Almost surely, 2^{221667166070711} is an apocalyptic number.

221667166070711 is a deficient number, since it is larger than the sum of its proper divisors (13529237579209).

221667166070711 is a wasteful number, since it uses less digits than its factorization.

221667166070711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27221806473.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 221667166070711 in words is "two hundred twenty-one trillion, six hundred sixty-seven billion, one hundred sixty-six million, seventy thousand, seven hundred eleven".