201000122120221 has 2 divisors, whose sum is σ = 201000122120222. Its totient is φ = 201000122120220.

The previous prime is 201000122120129. The next prime is 201000122120233. The reversal of 201000122120221 is 122021221000102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165132420348996 + 35867701771225 = 12850386^2 + 5988965^2 .

It is a cyclic number.

It is not a de Polignac number, because 201000122120221 - 2²¹ = 201000120023069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201000122120195 and 201000122120204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201000122120821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500061060110 + 100500061060111.

It is an arithmetic number, because the mean of its divisors is an integer number (100500061060111).

Almost surely, 2^{201000122120221} is an apocalyptic number.

It is an amenable number.

201000122120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201000122120221 is an equidigital number, since it uses as much as digits as its factorization.

201000122120221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201000122120221 its reverse (122021221000102), we get a palindrome (323021343120323).

The spelling of 201000122120221 in words is "two hundred one trillion, one hundred twenty-two million, one hundred twenty thousand, two hundred twenty-one".