20332220021171 has 2 divisors, whose sum is σ = 20332220021172. Its totient is φ = 20332220021170.

The previous prime is 20332220021167. The next prime is 20332220021207. The reversal of 20332220021171 is 17112002223302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20332220021171 - 2² = 20332220021167 is a prime.

It is a super-2 number, since 2×20332220021171² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20332220021171.

It is not a weakly prime, because it can be changed into another prime (20332220041171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166110010585 + 10166110010586.

It is an arithmetic number, because the mean of its divisors is an integer number (10166110010586).

Almost surely, 2^{20332220021171} is an apocalyptic number.

20332220021171 is a deficient number, since it is larger than the sum of its proper divisors (1).

20332220021171 is an equidigital number, since it uses as much as digits as its factorization.

20332220021171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 20332220021171 its reverse (17112002223302), we get a palindrome (37444222244473).

The spelling of 20332220021171 in words is "twenty trillion, three hundred thirty-two billion, two hundred twenty million, twenty-one thousand, one hundred seventy-one".