2101021105 has 8 divisors (see below), whose sum is σ = 2533896000. Its totient is φ = 1672369776.

The previous prime is 2101021073. The next prime is 2101021127. The reversal of 2101021105 is 5011201012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2101021105 - 2⁵ = 2101021073 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1054795 + ... + 1056784.

It is an arithmetic number, because the mean of its divisors is an integer number (316737000).

Almost surely, 2^2101021105 is an apocalyptic number.

It is an amenable number.

2101021105 is a deficient number, since it is larger than the sum of its proper divisors (432874895).

2101021105 is a wasteful number, since it uses less digits than its factorization.

2101021105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111783.

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 2101021105 is about 45836.8967645062. The cubic root of 2101021105 is about 1280.7866878301.

Adding to 2101021105 its reverse (5011201012), we get a palindrome (7112222117).

The spelling of 2101021105 in words is "two billion, one hundred one million, twenty-one thousand, one hundred five".