221021110223 has 8 divisors (see below), whose sum is σ = 228496004736. Its totient is φ = 213567789600.

The previous prime is 221021110213. The next prime is 221021110249. The reversal of 221021110223 is 322011120122.

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 221021110223 - 2⁴ = 221021110207 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 (221021110213) 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, 5372636 + ... + 5413617.

It is an arithmetic number, because the mean of its divisors is an integer number (28562000592).

Almost surely, 2^221021110223 is an apocalyptic number.

221021110223 is a deficient number, since it is larger than the sum of its proper divisors (7474894513).

221021110223 is a wasteful number, since it uses less digits than its factorization.

221021110223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10786945.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221021110223 its reverse (322011120122), we get a palindrome (543032230345).

The spelling of 221021110223 in words is "two hundred twenty-one billion, twenty-one million, one hundred ten thousand, two hundred twenty-three".