20000201142221 has 2 divisors, whose sum is σ = 20000201142222. Its totient is φ = 20000201142220.

The previous prime is 20000201142209. The next prime is 20000201142281. The reversal of 20000201142221 is 12224110200002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10489916126596 + 9510285015625 = 3238814^2 + 3083875^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000201142221 - 2²² = 20000196947917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20000201142221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000201142281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000100571110 + 10000100571111.

It is an arithmetic number, because the mean of its divisors is an integer number (10000100571111).

Almost surely, 2^{20000201142221} is an apocalyptic number.

It is an amenable number.

20000201142221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000201142221 is an equidigital number, since it uses as much as digits as its factorization.

20000201142221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20000201142221 its reverse (12224110200002), we get a palindrome (32224311342223).

The spelling of 20000201142221 in words is "twenty trillion, two hundred one million, one hundred forty-two thousand, two hundred twenty-one".