12201430121 has 2 divisors, whose sum is σ = 12201430122. Its totient is φ = 12201430120.

The previous prime is 12201430069. The next prime is 12201430177. The reversal of 12201430121 is 12103410221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9177640000 + 3023790121 = 95800^2 + 54989^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201430121 - 2¹⁸ = 12201167977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12201430121.

It is not a weakly prime, because it can be changed into another prime (12201430321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100715060 + 6100715061.

It is an arithmetic number, because the mean of its divisors is an integer number (6100715061).

Almost surely, 2^12201430121 is an apocalyptic number.

It is an amenable number.

12201430121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201430121 is an equidigital number, since it uses as much as digits as its factorization.

12201430121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12201430121 its reverse (12103410221), we get a palindrome (24304840342).

It can be divided in two parts, 1220 and 1430121, that added together give a palindrome (1431341).

The spelling of 12201430121 in words is "twelve billion, two hundred one million, four hundred thirty thousand, one hundred twenty-one".