12020105 has 8 divisors (see below), whose sum is σ = 15272712. Its totient is φ = 9050368.

The previous prime is 12020083. The next prime is 12020119. The reversal of 12020105 is 50102021.

It can be written as a sum of positive squares in 4 ways, for example, as 4313929 + 7706176 = 2077^2 + 2776^2 .

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 12020105 - 2⁸ = 12019849 is a prime.

It is a super-2 number, since 2×12020105² = 288965848422050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 70622 + ... + 70791.

It is an arithmetic number, because the mean of its divisors is an integer number (1909089).

Almost surely, 2^12020105 is an apocalyptic number.

It is an amenable number.

12020105 is a deficient number, since it is larger than the sum of its proper divisors (3252607).

12020105 is a wasteful number, since it uses less digits than its factorization.

12020105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141435.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 12020105 is about 3467.0023074697. The cubic root of 12020105 is about 229.0706353932.

Adding to 12020105 its reverse (50102021), we get a palindrome (62122126).

The spelling of 12020105 in words is "twelve million, twenty thousand, one hundred five".