105121023 has 12 divisors (see below), whose sum is σ = 163045080. Its totient is φ = 60069072.

The previous prime is 105121021. The next prime is 105121039. The reversal of 105121023 is 320121501.

It is not a de Polignac number, because 105121023 - 2¹ = 105121021 is a prime.

It is a super-2 number, since 2×105121023² = 22100858953133058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105120993 and 105121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105121021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 357408 + ... + 357701.

It is an arithmetic number, because the mean of its divisors is an integer number (13587090).

Almost surely, 2^105121023 is an apocalyptic number.

105121023 is a deficient number, since it is larger than the sum of its proper divisors (57924057).

105121023 is an equidigital number, since it uses as much as digits as its factorization.

105121023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715126 (or 715119 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 105121023 is about 10252.8543830487. The cubic root of 105121023 is about 471.9505822412.

Adding to 105121023 its reverse (320121501), we get a palindrome (425242524).

The spelling of 105121023 in words is "one hundred five million, one hundred twenty-one thousand, twenty-three".