12011221337 has 2 divisors, whose sum is σ = 12011221338. Its totient is φ = 12011221336.

The previous prime is 12011221331. The next prime is 12011221351. The reversal of 12011221337 is 73312211021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9076182361 + 2935038976 = 95269^2 + 54176^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011221337 - 2⁶ = 12011221273 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011221331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005610668 + 6005610669.

It is an arithmetic number, because the mean of its divisors is an integer number (6005610669).

Almost surely, 2^12011221337 is an apocalyptic number.

It is an amenable number.

12011221337 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011221337 is an equidigital number, since it uses as much as digits as its factorization.

12011221337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 12011221337 its reverse (73312211021), we get a palindrome (85323432358).

The spelling of 12011221337 in words is "twelve billion, eleven million, two hundred twenty-one thousand, three hundred thirty-seven".