12011250121 has 12 divisors (see below), whose sum is σ = 13651828932. Its totient is φ = 10503761184.

The previous prime is 12011250109. The next prime is 12011250191. The reversal of 12011250121 is 12105211021.

It can be written as a sum of positive squares in 2 ways, for example, as 2365849600 + 9645400521 = 48640^2 + 98211^2 .

It is not a de Polignac number, because 12011250121 - 2⁵ = 12011250089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011250095 and 12011250104.

It is not an unprimeable number, because it can be changed into a prime (12011250101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1275006 + ... + 1284391.

It is an arithmetic number, because the mean of its divisors is an integer number (1137652411).

Almost surely, 2^12011250121 is an apocalyptic number.

It is an amenable number.

12011250121 is a deficient number, since it is larger than the sum of its proper divisors (1640578811).

12011250121 is a wasteful number, since it uses less digits than its factorization.

12011250121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559448 (or 2559429 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 12011250121 its reverse (12105211021), we get a palindrome (24116461142).

The spelling of 12011250121 in words is "twelve billion, eleven million, two hundred fifty thousand, one hundred twenty-one".