2100221101 has 4 divisors (see below), whose sum is σ = 2291150304. Its totient is φ = 1909291900.

The previous prime is 2100221087. The next prime is 2100221113. The reversal of 2100221101 is 1011220012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2100221101 - 2⁹ = 2100220589 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 (2100221131) 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 3 ways as a sum of consecutive naturals, for example, 95464585 + ... + 95464606.

It is an arithmetic number, because the mean of its divisors is an integer number (572787576).

Almost surely, 2^2100221101 is an apocalyptic number.

It is an amenable number.

2100221101 is a deficient number, since it is larger than the sum of its proper divisors (190929203).

2100221101 is a wasteful number, since it uses less digits than its factorization.

2100221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190929202.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2100221101 is about 45828.1692957508. The cubic root of 2100221101 is about 1280.6241058443.

Adding to 2100221101 its reverse (1011220012), we get a palindrome (3111441113).

The spelling of 2100221101 in words is "two billion, one hundred million, two hundred twenty-one thousand, one hundred one".