224127121 has 4 divisors (see below), whose sum is σ = 224728372. Its totient is φ = 223525872.

The previous prime is 224127091. The next prime is 224127131. The reversal of 224127121 is 121721422.

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

It can be written as a sum of positive squares in 2 ways, for example, as 136048896 + 88078225 = 11664^2 + 9385^2 .

It is a cyclic number.

It is not a de Polignac number, because 224127121 - 2¹⁹ = 223602833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224127092 and 224127101.

It is not an unprimeable number, because it can be changed into a prime (224127131) 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, 300066 + ... + 300811.

It is an arithmetic number, because the mean of its divisors is an integer number (56182093).

Almost surely, 2^224127121 is an apocalyptic number.

It is an amenable number.

224127121 is a deficient number, since it is larger than the sum of its proper divisors (601251).

224127121 is an equidigital number, since it uses as much as digits as its factorization.

224127121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601250.

The product of its digits is 448, while the sum is 22.

The square root of 224127121 is about 14970.8757592868. The cubic root of 224127121 is about 607.4326578359.

Adding to 224127121 its reverse (121721422), we get a palindrome (345848543).

The spelling of 224127121 in words is "two hundred twenty-four million, one hundred twenty-seven thousand, one hundred twenty-one".