12100233121 has 2 divisors, whose sum is σ = 12100233122. Its totient is φ = 12100233120.

The previous prime is 12100233107. The next prime is 12100233203. The reversal of 12100233121 is 12133200121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9037164096 + 3063069025 = 95064^2 + 55345^2 .

It is a cyclic number.

It is not a de Polignac number, because 12100233121 - 2¹⁹ = 12099708833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12100233095 and 12100233104.

It is not a weakly prime, because it can be changed into another prime (12100233221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050116560 + 6050116561.

It is an arithmetic number, because the mean of its divisors is an integer number (6050116561).

Almost surely, 2^12100233121 is an apocalyptic number.

It is an amenable number.

12100233121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12100233121 is an equidigital number, since it uses as much as digits as its factorization.

12100233121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12100233121 its reverse (12133200121), we get a palindrome (24233433242).

The spelling of 12100233121 in words is "twelve billion, one hundred million, two hundred thirty-three thousand, one hundred twenty-one".