20003201301221 has 2 divisors, whose sum is σ = 20003201301222. Its totient is φ = 20003201301220.

The previous prime is 20003201301179. The next prime is 20003201301257. The reversal of 20003201301221 is 12210310230002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10009314062500 + 9993887238721 = 3163750^2 + 3161311^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003201301221 - 2²² = 20003197106917 is a prime.

It is a super-3 number, since 3×20003201301221³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20003201301221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20003201301521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001600650610 + 10001600650611.

It is an arithmetic number, because the mean of its divisors is an integer number (10001600650611).

Almost surely, 2^{20003201301221} is an apocalyptic number.

It is an amenable number.

20003201301221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003201301221 is an equidigital number, since it uses as much as digits as its factorization.

20003201301221 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 17.

Adding to 20003201301221 its reverse (12210310230002), we get a palindrome (32213511531223).

The spelling of 20003201301221 in words is "twenty trillion, three billion, two hundred one million, three hundred one thousand, two hundred twenty-one".