12001022212021 has 8 divisors (see below), whose sum is σ = 12035608754400. Its totient is φ = 11966436811248.

The previous prime is 12001022212007. The next prime is 12001022212073. The reversal of 12001022212021 is 12021222010021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12001022212021 - 2²⁹ = 12000485341109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001022211986 and 12001022212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001022212001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23657970 + ... + 24159916.

It is an arithmetic number, because the mean of its divisors is an integer number (1504451094300).

Almost surely, 2^{12001022212021} is an apocalyptic number.

It is an amenable number.

12001022212021 is a deficient number, since it is larger than the sum of its proper divisors (34586542379).

12001022212021 is an equidigital number, since it uses as much as digits as its factorization.

12001022212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570803.

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

Adding to 12001022212021 its reverse (12021222010021), we get a palindrome (24022244222042).

The spelling of 12001022212021 in words is "twelve trillion, one billion, twenty-two million, two hundred twelve thousand, twenty-one".