12020001 has 16 divisors (see below), whose sum is σ = 18591744. Its totient is φ = 6765264.

The previous prime is 12019993. The next prime is 12020051. The reversal of 12020001 is 10002021.

It is a happy number.

12020001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12020001 - 2³ = 12019993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12020051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2865 + ... + 5678.

It is an arithmetic number, because the mean of its divisors is an integer number (1161984).

Almost surely, 2^12020001 is an apocalyptic number.

It is an amenable number.

12020001 is a deficient number, since it is larger than the sum of its proper divisors (6571743).

12020001 is an equidigital number, since it uses as much as digits as its factorization.

12020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 12020001 is about 3466.9873088894. The cubic root of 12020001 is about 229.0699747385.

Adding to 12020001 its reverse (10002021), we get a palindrome (22022022).

The spelling of 12020001 in words is "twelve million, twenty thousand, one".