1011201110221 has 12 divisors (see below), whose sum is σ = 1023401597088. Its totient is φ = 999051879744.

The previous prime is 1011201110207. The next prime is 1011201110237. The reversal of 1011201110221 is 1220111021101.

It is a happy number.

It is not a de Polignac number, because 1011201110221 - 2⁷ = 1011201110093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011201110251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19285186 + ... + 19337548.

It is an arithmetic number, because the mean of its divisors is an integer number (85283466424).

Almost surely, 2^{1011201110221} is an apocalyptic number.

It is an amenable number.

1011201110221 is a deficient number, since it is larger than the sum of its proper divisors (12200486867).

1011201110221 is an frugal number, since it uses more digits than its factorization.

1011201110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53332 (or 52899 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1011201110221 its reverse (1220111021101), we get a palindrome (2231312131322).

The spelling of 1011201110221 in words is "one trillion, eleven billion, two hundred one million, one hundred ten thousand, two hundred twenty-one".