20020303102181 has 2 divisors, whose sum is σ = 20020303102182. Its totient is φ = 20020303102180.

The previous prime is 20020303102153. The next prime is 20020303102259. The reversal of 20020303102181 is 18120130302002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19984342048225 + 35961053956 = 4470385^2 + 189634^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020303102181 - 2⁶ = 20020303102117 is a prime.

It is a super-4 number, since 4×20020303102181⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020303101181) 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, 10010151551090 + 10010151551091.

It is an arithmetic number, because the mean of its divisors is an integer number (10010151551091).

Almost surely, 2^{20020303102181} is an apocalyptic number.

It is an amenable number.

20020303102181 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020303102181 is an equidigital number, since it uses as much as digits as its factorization.

20020303102181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 20020303102181 its reverse (18120130302002), we get a palindrome (38140433404183).

The spelling of 20020303102181 in words is "twenty trillion, twenty billion, three hundred three million, one hundred two thousand, one hundred eighty-one".