12020201001 has 12 divisors (see below), whose sum is σ = 17401187700. Its totient is φ = 7995617280.

The previous prime is 12020200993. The next prime is 12020201003. The reversal of 12020201001 is 10010202021.

It can be written as a sum of positive squares in 2 ways, for example, as 10040040000 + 1980161001 = 100200^2 + 44499^2 .

It is not a de Polignac number, because 12020201001 - 2³ = 12020200993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12020201003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1483240 + ... + 1491321.

It is an arithmetic number, because the mean of its divisors is an integer number (1450098975).

Almost surely, 2^12020201001 is an apocalyptic number.

It is an amenable number.

12020201001 is a deficient number, since it is larger than the sum of its proper divisors (5380986699).

12020201001 is a wasteful number, since it uses less digits than its factorization.

12020201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975016 (or 2975013 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12020201001 its reverse (10010202021), we get a palindrome (22030403022).

It can be divided in two parts, 1202020 and 1001, that added together give a palindrome (1203021).

The spelling of 12020201001 in words is "twelve billion, twenty million, two hundred one thousand, one".