12001022011021 has 8 divisors (see below), whose sum is σ = 12452339074304. Its totient is φ = 11553716655360.

The previous prime is 12001022011001. The next prime is 12001022011049. The reversal of 12001022011021 is 12011022010021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001022011021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001022010992 and 12001022011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001022011001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1002920811 + ... + 1002932776.

It is an arithmetic number, because the mean of its divisors is an integer number (1556542384288).

Almost surely, 2^{12001022011021} is an apocalyptic number.

It is an amenable number.

12001022011021 is a deficient number, since it is larger than the sum of its proper divisors (451317063283).

12001022011021 is a wasteful number, since it uses less digits than its factorization.

12001022011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005853811.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12001022011021 its reverse (12011022010021), we get a palindrome (24012044021042).

It can be divided in two parts, 1200102 and 2011021, that added together give a palindrome (3211123).

The spelling of 12001022011021 in words is "twelve trillion, one billion, twenty-two million, eleven thousand, twenty-one".