2101220220109 has 16 divisors (see below), whose sum is σ = 2119019748160. Its totient is φ = 2083461160320.

The previous prime is 2101220220097. The next prime is 2101220220193. The reversal of 2101220220109 is 9010220221012.

It is a cyclic number.

It is not a de Polignac number, because 2101220220109 - 2⁷ = 2101220219981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101220220109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101220290109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577732639 + ... + 577736275.

It is an arithmetic number, because the mean of its divisors is an integer number (132438734260).

Almost surely, 2^{2101220220109} is an apocalyptic number.

It is an amenable number.

2101220220109 is a deficient number, since it is larger than the sum of its proper divisors (17799528051).

2101220220109 is a wasteful number, since it uses less digits than its factorization.

2101220220109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7900.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 2101220220109 in words is "two trillion, one hundred one billion, two hundred twenty million, two hundred twenty thousand, one hundred nine".