12011023233221 has 2 divisors, whose sum is σ = 12011023233222. Its totient is φ = 12011023233220.

The previous prime is 12011023233199. The next prime is 12011023233233. The reversal of 12011023233221 is 12233232011021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9011583724900 + 2999439508321 = 3001930^2 + 1731889^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011023233221 - 2²⁶ = 12010956124357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011023235221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005511616610 + 6005511616611.

It is an arithmetic number, because the mean of its divisors is an integer number (6005511616611).

Almost surely, 2^{12011023233221} is an apocalyptic number.

It is an amenable number.

12011023233221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011023233221 is an equidigital number, since it uses as much as digits as its factorization.

12011023233221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12011023233221 its reverse (12233232011021), we get a palindrome (24244255244242).

The spelling of 12011023233221 in words is "twelve trillion, eleven billion, twenty-three million, two hundred thirty-three thousand, two hundred twenty-one".