221101201223 has 4 divisors (see below), whose sum is σ = 252687087120. Its totient is φ = 189515315328.

The previous prime is 221101201201. The next prime is 221101201253. The reversal of 221101201223 is 322102101122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221101201223 - 2⁶ = 221101201159 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 (221101201253) 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, 15792942938 + ... + 15792942951.

It is an arithmetic number, because the mean of its divisors is an integer number (63171771780).

Almost surely, 2^221101201223 is an apocalyptic number.

221101201223 is a deficient number, since it is larger than the sum of its proper divisors (31585885897).

221101201223 is an equidigital number, since it uses as much as digits as its factorization.

221101201223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31585885896.

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

Adding to 221101201223 its reverse (322102101122), we get a palindrome (543203302345).

The spelling of 221101201223 in words is "two hundred twenty-one billion, one hundred one million, two hundred one thousand, two hundred twenty-three".