105111010105 has 4 divisors (see below), whose sum is σ = 126133212132. Its totient is φ = 84088808080.

The previous prime is 105111010099. The next prime is 105111010127. The reversal of 105111010105 is 501010111501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 501010111501 = 444293 ⋅1127657.

It can be written as a sum of positive squares in 2 ways, for example, as 79442804736 + 25668205369 = 281856^2 + 160213^2 .

It is not a de Polignac number, because 105111010105 - 2³ = 105111010097 is a prime.

It is a super-2 number, since 2×105111010105² (a number of 23 digits) contains 22 as substring.

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, 10511101006 + ... + 10511101015.

It is an arithmetic number, because the mean of its divisors is an integer number (31533303033).

Almost surely, 2^105111010105 is an apocalyptic number.

It is an amenable number.

105111010105 is a deficient number, since it is larger than the sum of its proper divisors (21022202027).

105111010105 is an equidigital number, since it uses as much as digits as its factorization.

105111010105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21022202026.

The product of its (nonzero) digits is 25, while the sum is 16.

Adding to 105111010105 its reverse (501010111501), we get a palindrome (606121121606).

The spelling of 105111010105 in words is "one hundred five billion, one hundred eleven million, ten thousand, one hundred five".