224020243121 has 2 divisors, whose sum is σ = 224020243122. Its totient is φ = 224020243120.

The previous prime is 224020243099. The next prime is 224020243123. The reversal of 224020243121 is 121342020422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223884170896 + 136072225 = 473164^2 + 11665^2 .

It is a cyclic number.

It is not a de Polignac number, because 224020243121 - 2¹⁰ = 224020242097 is a prime.

Together with 224020243123, 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 (224020243123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112010121560 + 112010121561.

It is an arithmetic number, because the mean of its divisors is an integer number (112010121561).

Almost surely, 2^224020243121 is an apocalyptic number.

It is an amenable number.

224020243121 is a deficient number, since it is larger than the sum of its proper divisors (1).

224020243121 is an equidigital number, since it uses as much as digits as its factorization.

224020243121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 224020243121 its reverse (121342020422), we get a palindrome (345362263543).

The spelling of 224020243121 in words is "two hundred twenty-four billion, twenty million, two hundred forty-three thousand, one hundred twenty-one".