12030103121 has 4 divisors (see below), whose sum is σ = 12030784692. Its totient is φ = 12029421552.

The previous prime is 12030103117. The next prime is 12030103139. The reversal of 12030103121 is 12130103021.

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 9536499025 + 2493604096 = 97655^2 + 49936^2 .

It is a cyclic number.

It is not a de Polignac number, because 12030103121 - 2² = 12030103117 is a prime.

It is a super-2 number, since 2×12030103121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12030103096 and 12030103105.

It is not an unprimeable number, because it can be changed into a prime (12030123121) 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, 313586 + ... + 349851.

It is an arithmetic number, because the mean of its divisors is an integer number (3007696173).

Almost surely, 2^12030103121 is an apocalyptic number.

It is an amenable number.

12030103121 is a deficient number, since it is larger than the sum of its proper divisors (681571).

12030103121 is an equidigital number, since it uses as much as digits as its factorization.

12030103121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681570.

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

Adding to 12030103121 its reverse (12130103021), we get a palindrome (24160206142).

The spelling of 12030103121 in words is "twelve billion, thirty million, one hundred three thousand, one hundred twenty-one".