201201222200221 has 2 divisors, whose sum is σ = 201201222200222. Its totient is φ = 201201222200220.

The previous prime is 201201222200131. The next prime is 201201222200269. The reversal of 201201222200221 is 122002222102102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194379670724121 + 6821551476100 = 13942011^2 + 2611810^2 .

It is a cyclic number.

It is not a de Polignac number, because 201201222200221 - 2¹³ = 201201222192029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201201222200021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600611100110 + 100600611100111.

It is an arithmetic number, because the mean of its divisors is an integer number (100600611100111).

Almost surely, 2^{201201222200221} is an apocalyptic number.

It is an amenable number.

201201222200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201201222200221 is an equidigital number, since it uses as much as digits as its factorization.

201201222200221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 201201222200221 its reverse (122002222102102), we get a palindrome (323203444302323).

The spelling of 201201222200221 in words is "two hundred one trillion, two hundred one billion, two hundred twenty-two million, two hundred thousand, two hundred twenty-one".