2120103161105 has 4 divisors (see below), whose sum is σ = 2544123793332. Its totient is φ = 1696082528880.

The previous prime is 2120103161093. The next prime is 2120103161131. The reversal of 2120103161105 is 5011613010212.

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 826715559121 + 1293387601984 = 909239^2 + 1137272^2 .

It is not a de Polignac number, because 2120103161105 - 2¹² = 2120103157009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212010316106 + ... + 212010316115.

It is an arithmetic number, because the mean of its divisors is an integer number (636030948333).

Almost surely, 2^{2120103161105} is an apocalyptic number.

It is an amenable number.

2120103161105 is a deficient number, since it is larger than the sum of its proper divisors (424020632227).

2120103161105 is an equidigital number, since it uses as much as digits as its factorization.

2120103161105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424020632226.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 2120103161105 its reverse (5011613010212), we get a palindrome (7131716171317).

The spelling of 2120103161105 in words is "two trillion, one hundred twenty billion, one hundred three million, one hundred sixty-one thousand, one hundred five".