11223030121 has 2 divisors, whose sum is σ = 11223030122. Its totient is φ = 11223030120.

The previous prime is 11223030107. The next prime is 11223030139. The reversal of 11223030121 is 12103032211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8204736400 + 3018293721 = 90580^2 + 54939^2 .

It is a cyclic number.

It is not a de Polignac number, because 11223030121 - 2¹⁵ = 11222997353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11223030095 and 11223030104.

It is not a weakly prime, because it can be changed into another prime (11223033121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611515060 + 5611515061.

It is an arithmetic number, because the mean of its divisors is an integer number (5611515061).

Almost surely, 2^11223030121 is an apocalyptic number.

It is an amenable number.

11223030121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223030121 is an equidigital number, since it uses as much as digits as its factorization.

11223030121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11223030121 its reverse (12103032211), we get a palindrome (23326062332).

The spelling of 11223030121 in words is "eleven billion, two hundred twenty-three million, thirty thousand, one hundred twenty-one".