1130223121 has 4 divisors (see below), whose sum is σ = 1196706852. Its totient is φ = 1063739392.

The previous prime is 1130223103. The next prime is 1130223163. The reversal of 1130223121 is 1213220311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1213220311 = 379 ⋅3201109.

It can be written as a sum of positive squares in 2 ways, for example, as 456249600 + 673973521 = 21360^2 + 25961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130223121 - 2⁷ = 1130222993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1130223095 and 1130223104.

It is not an unprimeable number, because it can be changed into a prime (1130223191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33241840 + ... + 33241873.

It is an arithmetic number, because the mean of its divisors is an integer number (299176713).

Almost surely, 2^1130223121 is an apocalyptic number.

It is an amenable number.

1130223121 is a deficient number, since it is larger than the sum of its proper divisors (66483731).

1130223121 is an equidigital number, since it uses as much as digits as its factorization.

1130223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66483730.

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

The square root of 1130223121 is about 33618.7911888575. The cubic root of 1130223121 is about 1041.6489869156.

Adding to 1130223121 its reverse (1213220311), we get a palindrome (2343443432).

The spelling of 1130223121 in words is "one billion, one hundred thirty million, two hundred twenty-three thousand, one hundred twenty-one".