12221120237 has 2 divisors, whose sum is σ = 12221120238. Its totient is φ = 12221120236.

The previous prime is 12221120203. The next prime is 12221120243. The reversal of 12221120237 is 73202112221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12058455721 + 162664516 = 109811^2 + 12754^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221120237 - 2¹⁰ = 12221119213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12221120137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110560118 + 6110560119.

It is an arithmetic number, because the mean of its divisors is an integer number (6110560119).

Almost surely, 2^12221120237 is an apocalyptic number.

It is an amenable number.

12221120237 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221120237 is an equidigital number, since it uses as much as digits as its factorization.

12221120237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 12221120237 its reverse (73202112221), we get a palindrome (85423232458).

The spelling of 12221120237 in words is "twelve billion, two hundred twenty-one million, one hundred twenty thousand, two hundred thirty-seven".