12025434121 has 8 divisors (see below), whose sum is σ = 12365520264. Its totient is φ = 11686141440.

The previous prime is 12025434119. The next prime is 12025434131. The reversal of 12025434121 is 12143452021.

It can be written as a sum of positive squares in 4 ways, for example, as 5645418496 + 6380015625 = 75136^2 + 79875^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12025434121 - 2¹ = 12025434119 is a prime.

It is a super-2 number, since 2×12025434121² (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 (12025434101) 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 7 ways as a sum of consecutive naturals, for example, 167560 + ... + 228313.

It is an arithmetic number, because the mean of its divisors is an integer number (1545690033).

Almost surely, 2^12025434121 is an apocalyptic number.

It is an amenable number.

12025434121 is a deficient number, since it is larger than the sum of its proper divisors (340086143).

12025434121 is an equidigital number, since it uses as much as digits as its factorization.

12025434121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396731.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 12025434121 its reverse (12143452021), we get a palindrome (24168886142).

The spelling of 12025434121 in words is "twelve billion, twenty-five million, four hundred thirty-four thousand, one hundred twenty-one".