12021210022001 has 4 divisors (see below), whose sum is σ = 12021219647604. Its totient is φ = 12021200396400.

The previous prime is 12021210021991. The next prime is 12021210022079. The reversal of 12021210022001 is 10022001212021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1395233440000 + 10625976582001 = 1181200^2 + 3259751^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021210022001 - 2⁶ = 12021210021937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021210022301) 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 3 ways as a sum of consecutive naturals, for example, 2600510 + ... + 5550231.

It is an arithmetic number, because the mean of its divisors is an integer number (3005304911901).

Almost surely, 2^{12021210022001} is an apocalyptic number.

It is an amenable number.

12021210022001 is a deficient number, since it is larger than the sum of its proper divisors (9625603).

12021210022001 is an equidigital number, since it uses as much as digits as its factorization.

12021210022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9625602.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12021210022001 its reverse (10022001212021), we get a palindrome (22043211234022).

The spelling of 12021210022001 in words is "twelve trillion, twenty-one billion, two hundred ten million, twenty-two thousand, one".