20330221201 has 2 divisors, whose sum is σ = 20330221202. Its totient is φ = 20330221200.

The previous prime is 20330221199. The next prime is 20330221229. The reversal of 20330221201 is 10212203302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17735846976 + 2594374225 = 133176^2 + 50935^2 .

It is a cyclic number.

It is not a de Polignac number, because 20330221201 - 2¹ = 20330221199 is a prime.

Together with 20330221199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20330221231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165110600 + 10165110601.

It is an arithmetic number, because the mean of its divisors is an integer number (10165110601).

Almost surely, 2^20330221201 is an apocalyptic number.

It is an amenable number.

20330221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330221201 is an equidigital number, since it uses as much as digits as its factorization.

20330221201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20330221201 its reverse (10212203302), we get a palindrome (30542424503).

The spelling of 20330221201 in words is "twenty billion, three hundred thirty million, two hundred twenty-one thousand, two hundred one".