12232200121 has 2 divisors, whose sum is σ = 12232200122. Its totient is φ = 12232200120.

The previous prime is 12232200091. The next prime is 12232200143. The reversal of 12232200121 is 12100223221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11709620521 + 522579600 = 108211^2 + 22860^2 .

It is a cyclic number.

It is not a de Polignac number, because 12232200121 - 2¹¹ = 12232198073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12232200095 and 12232200104.

It is not a weakly prime, because it can be changed into another prime (12232200151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6116100060 + 6116100061.

It is an arithmetic number, because the mean of its divisors is an integer number (6116100061).

Almost surely, 2^12232200121 is an apocalyptic number.

It is an amenable number.

12232200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12232200121 is an equidigital number, since it uses as much as digits as its factorization.

12232200121 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 16.

Adding to 12232200121 its reverse (12100223221), we get a palindrome (24332423342).

The spelling of 12232200121 in words is "twelve billion, two hundred thirty-two million, two hundred thousand, one hundred twenty-one".