2102020211105 has 8 divisors (see below), whose sum is σ = 2538490650792. Its totient is φ = 1670905237248.

The previous prime is 2102020211101. The next prime is 2102020211143. The reversal of 2102020211105 is 5011120202012.

It can be written as a sum of positive squares in 4 ways, for example, as 3126263569 + 2098893947536 = 55913^2 + 1448756^2 .

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 2102020211105 - 2² = 2102020211101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102020211101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338865592 + ... + 1338867161.

It is an arithmetic number, because the mean of its divisors is an integer number (317311331349).

Almost surely, 2^{2102020211105} is an apocalyptic number.

It is an amenable number.

2102020211105 is a deficient number, since it is larger than the sum of its proper divisors (436470439687).

2102020211105 is a wasteful number, since it uses less digits than its factorization.

2102020211105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677732915.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 2102020211105 its reverse (5011120202012), we get a palindrome (7113140413117).

The spelling of 2102020211105 in words is "two trillion, one hundred two billion, twenty million, two hundred eleven thousand, one hundred five".