12100201121 has 2 divisors, whose sum is σ = 12100201122. Its totient is φ = 12100201120.

The previous prime is 12100201111. The next prime is 12100201147. The reversal of 12100201121 is 12110200121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11987841121 + 112360000 = 109489^2 + 10600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12100201121 is a prime.

It is not a weakly prime, because it can be changed into another prime (12100201111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050100560 + 6050100561.

It is an arithmetic number, because the mean of its divisors is an integer number (6050100561).

Almost surely, 2^12100201121 is an apocalyptic number.

It is an amenable number.

12100201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100201121 is an equidigital number, since it uses as much as digits as its factorization.

12100201121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12100201121 its reverse (12110200121), we get a palindrome (24210401242).

The spelling of 12100201121 in words is "twelve billion, one hundred million, two hundred one thousand, one hundred twenty-one".