20011022237 has 2 divisors, whose sum is σ = 20011022238. Its totient is φ = 20011022236.

The previous prime is 20011022197. The next prime is 20011022261. The reversal of 20011022237 is 73222011002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17799295396 + 2211726841 = 133414^2 + 47029^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011022237 - 2²⁰ = 20009973661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011022267) 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, 10005511118 + 10005511119.

It is an arithmetic number, because the mean of its divisors is an integer number (10005511119).

Almost surely, 2^20011022237 is an apocalyptic number.

It is an amenable number.

20011022237 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011022237 is an equidigital number, since it uses as much as digits as its factorization.

20011022237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 20011022237 its reverse (73222011002), we get a palindrome (93233033239).

The spelling of 20011022237 in words is "twenty billion, eleven million, twenty-two thousand, two hundred thirty-seven".