216221716001 has 8 divisors (see below), whose sum is σ = 216491110080. Its totient is φ = 215952429168.

The previous prime is 216221715991. The next prime is 216221716079. The reversal of 216221716001 is 100617122612.

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

It is a cyclic number.

It is not a de Polignac number, because 216221716001 - 2⁶ = 216221715937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216221715001) 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, 4469420 + ... + 4517538.

It is an arithmetic number, because the mean of its divisors is an integer number (27061388760).

Almost surely, 2^216221716001 is an apocalyptic number.

It is an amenable number.

216221716001 is a deficient number, since it is larger than the sum of its proper divisors (269394079).

216221716001 is an equidigital number, since it uses as much as digits as its factorization.

216221716001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53623.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 216221716001 its reverse (100617122612), we get a palindrome (316838838613).

The spelling of 216221716001 in words is "two hundred sixteen billion, two hundred twenty-one million, seven hundred sixteen thousand, one".