201201221093 has 2 divisors, whose sum is σ = 201201221094. Its totient is φ = 201201221092.

The previous prime is 201201221087. The next prime is 201201221113. The reversal of 201201221093 is 390122102102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126520355809 + 74680865284 = 355697^2 + 273278^2 .

It is a cyclic number.

It is not a de Polignac number, because 201201221093 - 2²⁶ = 201134112229 is a prime.

It is a super-2 number, since 2×201201221093² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201201221293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600610546 + 100600610547.

It is an arithmetic number, because the mean of its divisors is an integer number (100600610547).

Almost surely, 2^201201221093 is an apocalyptic number.

It is an amenable number.

201201221093 is a deficient number, since it is larger than the sum of its proper divisors (1).

201201221093 is an equidigital number, since it uses as much as digits as its factorization.

201201221093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 201201221093 its reverse (390122102102), we get a palindrome (591323323195).

The spelling of 201201221093 in words is "two hundred one billion, two hundred one million, two hundred twenty-one thousand, ninety-three".