2101113221 has 4 divisors (see below), whose sum is σ = 2112000012. Its totient is φ = 2090226432.

The previous prime is 2101113169. The next prime is 2101113269. The reversal of 2101113221 is 1223111012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 991557121 + 1109556100 = 31489^2 + 33310^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101113221 - 2¹⁰ = 2101112197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101113196 and 2101113205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101113281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5443106 + ... + 5443491.

It is an arithmetic number, because the mean of its divisors is an integer number (528000003).

Almost surely, 2^2101113221 is an apocalyptic number.

It is an amenable number.

2101113221 is a deficient number, since it is larger than the sum of its proper divisors (10886791).

2101113221 is a wasteful number, since it uses less digits than its factorization.

2101113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10886790.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2101113221 is about 45837.9015771883. The cubic root of 2101113221 is about 1280.8054055895.

Adding to 2101113221 its reverse (1223111012), we get a palindrome (3324224233).

The spelling of 2101113221 in words is "two billion, one hundred one million, one hundred thirteen thousand, two hundred twenty-one".