12021010002 has 24 divisors (see below), whose sum is σ = 26058190860. Its totient is φ = 4005054240.

The previous prime is 12021009997. The next prime is 12021010009. The reversal of 12021010002 is 20001012021.

It can be written as a sum of positive squares in 2 ways, for example, as 10150361001 + 1870649001 = 100749^2 + 43251^2 .

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 (12021010009) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 124149 + ... + 198632.

Almost surely, 2^12021010002 is an apocalyptic number.

12021010002 is an abundant number, since it is smaller than the sum of its proper divisors (14037180858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021010002 is a wasteful number, since it uses less digits than its factorization.

12021010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324858 (or 324855 counting only the distinct ones).

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

Adding to 12021010002 its reverse (20001012021), we get a palindrome (32022022023).

The spelling of 12021010002 in words is "twelve billion, twenty-one million, ten thousand, two".