221441123 has 4 divisors (see below), whose sum is σ = 226842168. Its totient is φ = 216040080.

The previous prime is 221441113. The next prime is 221441131. The reversal of 221441123 is 321144122.

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 221441123 - 2¹⁶ = 221375587 is a prime.

It is a super-2 number, since 2×221441123² = 98072341911002258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221441095 and 221441104.

It is not an unprimeable number, because it can be changed into a prime (221441113) 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, 2700461 + ... + 2700542.

It is an arithmetic number, because the mean of its divisors is an integer number (56710542).

Almost surely, 2^221441123 is an apocalyptic number.

221441123 is a deficient number, since it is larger than the sum of its proper divisors (5401045).

221441123 is an equidigital number, since it uses as much as digits as its factorization.

221441123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5401044.

The product of its digits is 384, while the sum is 20.

The square root of 221441123 is about 14880.8979231765. The cubic root of 221441123 is about 604.9963554182.

Adding to 221441123 its reverse (321144122), we get a palindrome (542585245).

The spelling of 221441123 in words is "two hundred twenty-one million, four hundred forty-one thousand, one hundred twenty-three".