5511121223 has 2 divisors, whose sum is σ = 5511121224. Its totient is φ = 5511121222.

The previous prime is 5511121219. The next prime is 5511121229. The reversal of 5511121223 is 3221211155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5511121223 - 2² = 5511121219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5511121229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755560611 + 2755560612.

It is an arithmetic number, because the mean of its divisors is an integer number (2755560612).

Almost surely, 2^5511121223 is an apocalyptic number.

5511121223 is a deficient number, since it is larger than the sum of its proper divisors (1).

5511121223 is an equidigital number, since it uses as much as digits as its factorization.

5511121223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 23.

The square root of 5511121223 is about 74236.9262766179. The cubic root of 5511121223 is about 1766.3631178998.

Adding to 5511121223 its reverse (3221211155), we get a palindrome (8732332378).

The spelling of 5511121223 in words is "five billion, five hundred eleven million, one hundred twenty-one thousand, two hundred twenty-three".