12232221231121 has 2 divisors, whose sum is σ = 12232221231122. Its totient is φ = 12232221231120.

The previous prime is 12232221231101. The next prime is 12232221231133. The reversal of 12232221231121 is 12113212223221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11941786464721 + 290434766400 = 3455689^2 + 538920^2 .

It is a cyclic number.

It is not a de Polignac number, because 12232221231121 - 2²⁹ = 12231684360209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12232221231101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6116110615560 + 6116110615561.

It is an arithmetic number, because the mean of its divisors is an integer number (6116110615561).

Almost surely, 2^{12232221231121} is an apocalyptic number.

It is an amenable number.

12232221231121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12232221231121 is an equidigital number, since it uses as much as digits as its factorization.

12232221231121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 25.

Adding to 12232221231121 its reverse (12113212223221), we get a palindrome (24345433454342).

The spelling of 12232221231121 in words is "twelve trillion, two hundred thirty-two billion, two hundred twenty-one million, two hundred thirty-one thousand, one hundred twenty-one".