221110012321 has 16 divisors (see below), whose sum is σ = 255440053440. Its totient is φ = 189155220480.

The previous prime is 221110012303. The next prime is 221110012351. The reversal of 221110012321 is 123210011122.

It is a cyclic number.

It is not a de Polignac number, because 221110012321 - 2⁹ = 221110011809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221110012295 and 221110012304.

It is not an unprimeable number, because it can be changed into a prime (221110012301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140010 + ... + 1319788.

It is an arithmetic number, because the mean of its divisors is an integer number (15965003340).

Almost surely, 2^221110012321 is an apocalyptic number.

It is an amenable number.

221110012321 is a deficient number, since it is larger than the sum of its proper divisors (34330041119).

221110012321 is a wasteful number, since it uses less digits than its factorization.

221110012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186384.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221110012321 its reverse (123210011122), we get a palindrome (344320023443).

The spelling of 221110012321 in words is "two hundred twenty-one billion, one hundred ten million, twelve thousand, three hundred twenty-one".