201110010221 has 2 divisors, whose sum is σ = 201110010222. Its totient is φ = 201110010220.

The previous prime is 201110010209. The next prime is 201110010259. The reversal of 201110010221 is 122010011102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134605336996 + 66504673225 = 366886^2 + 257885^2 .

It is a cyclic number.

It is not a de Polignac number, because 201110010221 - 2²² = 201105815917 is a prime.

It is a super-2 number, since 2×201110010221² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201115010221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100555005110 + 100555005111.

It is an arithmetic number, because the mean of its divisors is an integer number (100555005111).

Almost surely, 2^201110010221 is an apocalyptic number.

It is an amenable number.

201110010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201110010221 is an equidigital number, since it uses as much as digits as its factorization.

201110010221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201110010221 its reverse (122010011102), we get a palindrome (323120021323).

The spelling of 201110010221 in words is "two hundred one billion, one hundred ten million, ten thousand, two hundred twenty-one".