221430666336016 has 20 divisors (see below), whose sum is σ = 435425228207632. Its totient is φ = 109062865508256.

The previous prime is 221430666336013. The next prime is 221430666336023. The reversal of 221430666336016 is 610633666034122.

It is not an unprimeable number, because it can be changed into a prime (221430666336013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103279227630 + ... + 103279229773.

Almost surely, 2^{221430666336016} is an apocalyptic number.

It is an amenable number.

221430666336016 is a deficient number, since it is larger than the sum of its proper divisors (213994561871616).

221430666336016 is a wasteful number, since it uses less digits than its factorization.

221430666336016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206558457478 (or 206558457472 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 49.

The spelling of 221430666336016 in words is "two hundred twenty-one trillion, four hundred thirty billion, six hundred sixty-six million, three hundred thirty-six thousand, sixteen".