12012121002 has 32 divisors (see below), whose sum is σ = 27722852352. Its totient is φ = 3398712624.

The previous prime is 12012120977. The next prime is 12012121007. The reversal of 12012121002 is 20012121021.

It is not an unprimeable number, because it can be changed into a prime (12012121007) 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, 1384038 + ... + 1392689.

It is an arithmetic number, because the mean of its divisors is an integer number (866339136).

Almost surely, 2^12012121002 is an apocalyptic number.

12012121002 is an abundant number, since it is smaller than the sum of its proper divisors (15710731350).

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

12012121002 is a wasteful number, since it uses less digits than its factorization.

12012121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776842.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12012121002 its reverse (20012121021), we get a palindrome (32024242023).

The spelling of 12012121002 in words is "twelve billion, twelve million, one hundred twenty-one thousand, two".