105230120205 has 32 divisors (see below), whose sum is σ = 192433123584. Its totient is φ = 48102114816.

The previous prime is 105230120167. The next prime is 105230120209. The reversal of 105230120205 is 502021032501.

It is not a de Polignac number, because 105230120205 - 2¹⁹ = 105229595917 is a prime.

It is a super-2 number, since 2×105230120205² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105230120209) 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 31 ways as a sum of consecutive naturals, for example, 2786107 + ... + 2823623.

It is an arithmetic number, because the mean of its divisors is an integer number (6013535112).

Almost surely, 2^105230120205 is an apocalyptic number.

105230120205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

105230120205 is a deficient number, since it is larger than the sum of its proper divisors (87203003379).

105230120205 is a wasteful number, since it uses less digits than its factorization.

105230120205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64245.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 105230120205 its reverse (502021032501), we get a palindrome (607251152706).

The spelling of 105230120205 in words is "one hundred five billion, two hundred thirty million, one hundred twenty thousand, two hundred five".