20003221201 has 2 divisors, whose sum is σ = 20003221202. Its totient is φ = 20003221200.

The previous prime is 20003221177. The next prime is 20003221283. The reversal of 20003221201 is 10212230002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19830272400 + 172948801 = 140820^2 + 13151^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003221201 - 2¹¹ = 20003219153 is a prime.

It is a super-2 number, since 2×20003221201² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20003225201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001610600 + 10001610601.

It is an arithmetic number, because the mean of its divisors is an integer number (10001610601).

Almost surely, 2^20003221201 is an apocalyptic number.

It is an amenable number.

20003221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003221201 is an equidigital number, since it uses as much as digits as its factorization.

20003221201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20003221201 its reverse (10212230002), we get a palindrome (30215451203).

The spelling of 20003221201 in words is "twenty billion, three million, two hundred twenty-one thousand, two hundred one".