221616000001 has 8 divisors (see below), whose sum is σ = 242133151104. Its totient is φ = 201160555920.

The previous prime is 221615999963. The next prime is 221616000059. The reversal of 221616000001 is 100000616122.

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 221616000001 - 2²¹ = 221613902849 is a prime.

It is a super-2 number, since 2×221616000001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221616000091) 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, 15419241 + ... + 15433606.

It is an arithmetic number, because the mean of its divisors is an integer number (30266643888).

Almost surely, 2^221616000001 is an apocalyptic number.

It is an amenable number.

221616000001 is a deficient number, since it is larger than the sum of its proper divisors (20517151103).

221616000001 is a wasteful number, since it uses less digits than its factorization.

221616000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30853511.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 221616000001 its reverse (100000616122), we get a palindrome (321616616123).

The spelling of 221616000001 in words is "two hundred twenty-one billion, six hundred sixteen million, one", and thus it is an aban number.