12011020237 has 2 divisors, whose sum is σ = 12011020238. Its totient is φ = 12011020236.

The previous prime is 12011020213. The next prime is 12011020289. The reversal of 12011020237 is 73202011021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6302613321 + 5708406916 = 79389^2 + 75554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011020237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011020207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005510118 + 6005510119.

It is an arithmetic number, because the mean of its divisors is an integer number (6005510119).

Almost surely, 2^12011020237 is an apocalyptic number.

It is an amenable number.

12011020237 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011020237 is an equidigital number, since it uses as much as digits as its factorization.

12011020237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 12011020237 its reverse (73202011021), we get a palindrome (85213031258).

The spelling of 12011020237 in words is "twelve billion, eleven million, twenty thousand, two hundred thirty-seven".