201041111221 has 2 divisors, whose sum is σ = 201041111222. Its totient is φ = 201041111220.

The previous prime is 201041111203. The next prime is 201041111273. The reversal of 201041111221 is 122111140102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182337540100 + 18703571121 = 427010^2 + 136761^2 .

It is a cyclic number.

It is not a de Polignac number, because 201041111221 - 2¹¹ = 201041109173 is a prime.

It is a super-2 number, since 2×201041111221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201041111195 and 201041111204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201041112221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100520555610 + 100520555611.

It is an arithmetic number, because the mean of its divisors is an integer number (100520555611).

Almost surely, 2^201041111221 is an apocalyptic number.

It is an amenable number.

201041111221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201041111221 is an equidigital number, since it uses as much as digits as its factorization.

201041111221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201041111221 its reverse (122111140102), we get a palindrome (323152251323).

The spelling of 201041111221 in words is "two hundred one billion, forty-one million, one hundred eleven thousand, two hundred twenty-one".