224232121 has 2 divisors, whose sum is σ = 224232122. Its totient is φ = 224232120.

The previous prime is 224232119. The next prime is 224232149. The reversal of 224232121 is 121232422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181198521 + 43033600 = 13461^2 + 6560^2 .

It is a cyclic number.

It is not a de Polignac number, because 224232121 - 2¹ = 224232119 is a prime.

Together with 224232119, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (224232101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112116060 + 112116061.

It is an arithmetic number, because the mean of its divisors is an integer number (112116061).

Almost surely, 2^224232121 is an apocalyptic number.

It is an amenable number.

224232121 is a deficient number, since it is larger than the sum of its proper divisors (1).

224232121 is an equidigital number, since it uses as much as digits as its factorization.

224232121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 19.

The square root of 224232121 is about 14974.3821575383. The cubic root of 224232121 is about 607.5275005474.

Adding to 224232121 its reverse (121232422), we get a palindrome (345464543).

The spelling of 224232121 in words is "two hundred twenty-four million, two hundred thirty-two thousand, one hundred twenty-one".