12020110001 has 4 divisors (see below), whose sum is σ = 12027704832. Its totient is φ = 12012515172.

The previous prime is 12020109977. The next prime is 12020110007. The reversal of 12020110001 is 10001102021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10001102021 = 40847 ⋅244843.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020110001 is a prime.

It is a super-2 number, since 2×12020110001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020110007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3795041 + ... + 3798206.

It is an arithmetic number, because the mean of its divisors is an integer number (3006926208).

Almost surely, 2^12020110001 is an apocalyptic number.

It is an amenable number.

12020110001 is a deficient number, since it is larger than the sum of its proper divisors (7594831).

12020110001 is an equidigital number, since it uses as much as digits as its factorization.

12020110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7594830.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12020110001 its reverse (10001102021), we get a palindrome (22021212022).

The spelling of 12020110001 in words is "twelve billion, twenty million, one hundred ten thousand, one".