20332110181 has 2 divisors, whose sum is σ = 20332110182. Its totient is φ = 20332110180.

The previous prime is 20332110119. The next prime is 20332110199. The reversal of 20332110181 is 18101123302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18586959556 + 1745150625 = 136334^2 + 41775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20332110181 is a prime.

It is a super-2 number, since 2×20332110181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20332110481) 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, 10166055090 + 10166055091.

It is an arithmetic number, because the mean of its divisors is an integer number (10166055091).

Almost surely, 2^20332110181 is an apocalyptic number.

It is an amenable number.

20332110181 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332110181 is an equidigital number, since it uses as much as digits as its factorization.

20332110181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 20332110181 its reverse (18101123302), we get a palindrome (38433233483).

The spelling of 20332110181 in words is "twenty billion, three hundred thirty-two million, one hundred ten thousand, one hundred eighty-one".