12002021221012 has 6 divisors (see below), whose sum is σ = 21003537136778. Its totient is φ = 6001010610504.

The previous prime is 12002021221009. The next prime is 12002021221013. The reversal of 12002021221012 is 21012212020021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11957667176196 + 44354044816 = 3457986^2 + 210604^2 .

It is a super-3 number, since 3×12002021221012³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002021221013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1500252652623 + ... + 1500252652630.

Almost surely, 2^{12002021221012} is an apocalyptic number.

It is an amenable number.

12002021221012 is a deficient number, since it is larger than the sum of its proper divisors (9001515915766).

12002021221012 is a wasteful number, since it uses less digits than its factorization.

12002021221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000505305257 (or 3000505305255 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12002021221012 its reverse (21012212020021), we get a palindrome (33014233241033).

The spelling of 12002021221012 in words is "twelve trillion, two billion, twenty-one million, two hundred twenty-one thousand, twelve".