12020505 has 32 divisors (see below), whose sum is σ = 22118400. Its totient is φ = 5460672.

The previous prime is 12020473. The next prime is 12020507. The reversal of 12020505 is 50502021.

12020505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12020505 - 2⁵ = 12020473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (12020507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24856 + ... + 25334.

It is an arithmetic number, because the mean of its divisors is an integer number (691200).

Almost surely, 2^12020505 is an apocalyptic number.

12020505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12020505 is a deficient number, since it is larger than the sum of its proper divisors (10097895).

12020505 is a wasteful number, since it uses less digits than its factorization.

12020505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 12020505 is about 3467.0599937123. The cubic root of 12020505 is about 229.0731763371.

Adding to 12020505 its reverse (50502021), we get a palindrome (62522526).

The spelling of 12020505 in words is "twelve million, twenty thousand, five hundred five".