12021101221001 has 2 divisors, whose sum is σ = 12021101221002. Its totient is φ = 12021101221000.

The previous prime is 12021101220977. The next prime is 12021101221007. The reversal of 12021101221001 is 10012210112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9946202137600 + 2074899083401 = 3153760^2 + 1440451^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021101221001 - 2²⁶ = 12021034112137 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021101221007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010550610500 + 6010550610501.

It is an arithmetic number, because the mean of its divisors is an integer number (6010550610501).

Almost surely, 2^{12021101221001} is an apocalyptic number.

It is an amenable number.

12021101221001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021101221001 is an equidigital number, since it uses as much as digits as its factorization.

12021101221001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12021101221001 its reverse (10012210112021), we get a palindrome (22033311333022).

The spelling of 12021101221001 in words is "twelve trillion, twenty-one billion, one hundred one million, two hundred twenty-one thousand, one".