224102051021 has 2 divisors, whose sum is σ = 224102051022. Its totient is φ = 224102051020.

The previous prime is 224102050967. The next prime is 224102051023. The reversal of 224102051021 is 120150201422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123000309796 + 101101741225 = 350714^2 + 317965^2 .

It is a cyclic number.

It is not a de Polignac number, because 224102051021 - 2¹⁸ = 224101788877 is a prime.

Together with 224102051023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 224102050984 and 224102051002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224102051023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112051025510 + 112051025511.

It is an arithmetic number, because the mean of its divisors is an integer number (112051025511).

Almost surely, 2^224102051021 is an apocalyptic number.

It is an amenable number.

224102051021 is a deficient number, since it is larger than the sum of its proper divisors (1).

224102051021 is an equidigital number, since it uses as much as digits as its factorization.

224102051021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 224102051021 its reverse (120150201422), we get a palindrome (344252252443).

The spelling of 224102051021 in words is "two hundred twenty-four billion, one hundred two million, fifty-one thousand, twenty-one".