20201011332221 has 2 divisors, whose sum is σ = 20201011332222. Its totient is φ = 20201011332220.

The previous prime is 20201011332179. The next prime is 20201011332241. The reversal of 20201011332221 is 12223311010202.

It is an a-pointer prime, because the next prime (20201011332241) can be obtained adding 20201011332221 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17790351415321 + 2410659916900 = 4217861^2 + 1552630^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201011332221 - 2¹⁰ = 20201011331197 is a prime.

It is a super-2 number, since 2×20201011332221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20201011332193 and 20201011332202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201011332241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100505666110 + 10100505666111.

It is an arithmetic number, because the mean of its divisors is an integer number (10100505666111).

Almost surely, 2^{20201011332221} is an apocalyptic number.

It is an amenable number.

20201011332221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201011332221 is an equidigital number, since it uses as much as digits as its factorization.

20201011332221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20201011332221 its reverse (12223311010202), we get a palindrome (32424322342423).

The spelling of 20201011332221 in words is "twenty trillion, two hundred one billion, eleven million, three hundred thirty-two thousand, two hundred twenty-one".