12030010121 has 4 divisors (see below), whose sum is σ = 12323425044. Its totient is φ = 11736595200.

The previous prime is 12030010093. The next prime is 12030010147. The reversal of 12030010121 is 12101003021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12101003021 = 7351 ⋅1646171.

It can be written as a sum of positive squares in 2 ways, for example, as 4328192521 + 7701817600 = 65789^2 + 87760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12030010121 is a prime.

It is a super-2 number, since 2×12030010121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12030010021) 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, 146707400 + ... + 146707481.

It is an arithmetic number, because the mean of its divisors is an integer number (3080856261).

Almost surely, 2^12030010121 is an apocalyptic number.

It is an amenable number.

12030010121 is a deficient number, since it is larger than the sum of its proper divisors (293414923).

12030010121 is an equidigital number, since it uses as much as digits as its factorization.

12030010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293414922.

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

Adding to 12030010121 its reverse (12101003021), we get a palindrome (24131013142).

The spelling of 12030010121 in words is "twelve billion, thirty million, ten thousand, one hundred twenty-one".