221331020223 has 16 divisors (see below), whose sum is σ = 300831363072. Its totient is φ = 144714108000.

The previous prime is 221331020213. The next prime is 221331020237. The reversal of 221331020223 is 322020133122.

It is a happy number.

It is not a de Polignac number, because 221331020223 - 2¹⁶ = 221330954687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221331020223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221331020203) 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, 2679508 + ... + 2760873.

It is an arithmetic number, because the mean of its divisors is an integer number (18801960192).

Almost surely, 2^221331020223 is an apocalyptic number.

221331020223 is a deficient number, since it is larger than the sum of its proper divisors (79500342849).

221331020223 is a wasteful number, since it uses less digits than its factorization.

221331020223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5440646.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221331020223 its reverse (322020133122), we get a palindrome (543351153345).

The spelling of 221331020223 in words is "two hundred twenty-one billion, three hundred thirty-one million, twenty thousand, two hundred twenty-three".