1230001121 has 4 divisors (see below), whose sum is σ = 1231679892. Its totient is φ = 1228322352.

The previous prime is 1230001117. The next prime is 1230001141. The reversal of 1230001121 is 1211000321.

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 959760400 + 270240721 = 30980^2 + 16439^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230001121 - 2² = 1230001117 is a prime.

It is a super-2 number, since 2×1230001121² = 3025805515322513282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230001141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838286 + ... + 839751.

It is an arithmetic number, because the mean of its divisors is an integer number (307919973).

Almost surely, 2^1230001121 is an apocalyptic number.

It is an amenable number.

1230001121 is a deficient number, since it is larger than the sum of its proper divisors (1678771).

1230001121 is an equidigital number, since it uses as much as digits as its factorization.

1230001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678770.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1230001121 is about 35071.3718151999. The cubic root of 1230001121 is about 1071.4415951881.

Adding to 1230001121 its reverse (1211000321), we get a palindrome (2441001442).

The spelling of 1230001121 in words is "one billion, two hundred thirty million, one thousand, one hundred twenty-one".