12232020121 has 2 divisors, whose sum is σ = 12232020122. Its totient is φ = 12232020120.

The previous prime is 12232020091. The next prime is 12232020167. The reversal of 12232020121 is 12102023221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11191312521 + 1040707600 = 105789^2 + 32260^2 .

It is a cyclic number.

It is not a de Polignac number, because 12232020121 - 2⁷ = 12232019993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12232020095 and 12232020104.

It is not a weakly prime, because it can be changed into another prime (12232050121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6116010060 + 6116010061.

It is an arithmetic number, because the mean of its divisors is an integer number (6116010061).

Almost surely, 2^12232020121 is an apocalyptic number.

It is an amenable number.

12232020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12232020121 is an equidigital number, since it uses as much as digits as its factorization.

12232020121 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 12232020121 its reverse (12102023221), we get a palindrome (24334043342).

The spelling of 12232020121 in words is "twelve billion, two hundred thirty-two million, twenty thousand, one hundred twenty-one".