1123310210221 has 2 divisors, whose sum is σ = 1123310210222. Its totient is φ = 1123310210220.

The previous prime is 1123310210167. The next prime is 1123310210249. The reversal of 1123310210221 is 1220120133211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1089862921225 + 33447288996 = 1043965^2 + 182886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123310210221 - 2⁷ = 1123310210093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123310210261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561655105110 + 561655105111.

It is an arithmetic number, because the mean of its divisors is an integer number (561655105111).

Almost surely, 2^{1123310210221} is an apocalyptic number.

It is an amenable number.

1123310210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123310210221 is an equidigital number, since it uses as much as digits as its factorization.

1123310210221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1123310210221 its reverse (1220120133211), we get a palindrome (2343430343432).

The spelling of 1123310210221 in words is "one trillion, one hundred twenty-three billion, three hundred ten million, two hundred ten thousand, two hundred twenty-one".