1130023121 has 4 divisors (see below), whose sum is σ = 1142720100. Its totient is φ = 1117326144.

The previous prime is 1130023087. The next prime is 1130023127. The reversal of 1130023121 is 1213200311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 342435025 + 787588096 = 18505^2 + 28064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130023121 - 2¹⁸ = 1129760977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1130023096 and 1130023105.

It is not an unprimeable number, because it can be changed into a prime (1130023127) 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, 6348356 + ... + 6348533.

It is an arithmetic number, because the mean of its divisors is an integer number (285680025).

Almost surely, 2^1130023121 is an apocalyptic number.

It is an amenable number.

1130023121 is a deficient number, since it is larger than the sum of its proper divisors (12696979).

1130023121 is an equidigital number, since it uses as much as digits as its factorization.

1130023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12696978.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1130023121 is about 33615.8165303180. The cubic root of 1130023121 is about 1041.5875412054.

Adding to 1130023121 its reverse (1213200311), we get a palindrome (2343223432).

The spelling of 1130023121 in words is "one billion, one hundred thirty million, twenty-three thousand, one hundred twenty-one".