201020222102177 has 2 divisors, whose sum is σ = 201020222102178. Its totient is φ = 201020222102176.

The previous prime is 201020222102083. The next prime is 201020222102197. The reversal of 201020222102177 is 771201222020102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200630907251776 + 389314850401 = 14164424^2 + 623951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201020222102177 is a prime.

It is not a weakly prime, because it can be changed into another prime (201020222102197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510111051088 + 100510111051089.

It is an arithmetic number, because the mean of its divisors is an integer number (100510111051089).

Almost surely, 2^{201020222102177} is an apocalyptic number.

It is an amenable number.

201020222102177 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020222102177 is an equidigital number, since it uses as much as digits as its factorization.

201020222102177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

Adding to 201020222102177 its reverse (771201222020102), we get a palindrome (972221444122279).

The spelling of 201020222102177 in words is "two hundred one trillion, twenty billion, two hundred twenty-two million, one hundred two thousand, one hundred seventy-seven".