224001121 has 2 divisors, whose sum is σ = 224001122. Its totient is φ = 224001120.

The previous prime is 224001119. The next prime is 224001139. The reversal of 224001121 is 121100422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130782096 + 93219025 = 11436^2 + 9655^2 .

It is a cyclic number.

It is not a de Polignac number, because 224001121 - 2¹ = 224001119 is a prime.

Together with 224001119, 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 (224001221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112000560 + 112000561.

It is an arithmetic number, because the mean of its divisors is an integer number (112000561).

Almost surely, 2^224001121 is an apocalyptic number.

It is an amenable number.

224001121 is a deficient number, since it is larger than the sum of its proper divisors (1).

224001121 is an equidigital number, since it uses as much as digits as its factorization.

224001121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 224001121 is about 14966.6669970304. Note that the first 3 decimals coincide. The cubic root of 224001121 is about 607.3188074735.

Adding to 224001121 its reverse (121100422), we get a palindrome (345101543).

The spelling of 224001121 in words is "two hundred twenty-four million, one thousand, one hundred twenty-one".