12021012021001 has 2 divisors, whose sum is σ = 12021012021002. Its totient is φ = 12021012021000.

The previous prime is 12021012020993. The next prime is 12021012021037. The reversal of 12021012021001 is 10012021012021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11313461875401 + 707550145600 = 3363549^2 + 841160^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021012021001 - 2³ = 12021012020993 is a prime.

It is not a weakly prime, because it can be changed into another prime (12021012421001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010506010500 + 6010506010501.

It is an arithmetic number, because the mean of its divisors is an integer number (6010506010501).

Almost surely, 2^{12021012021001} is an apocalyptic number.

It is an amenable number.

12021012021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021012021001 is an equidigital number, since it uses as much as digits as its factorization.

12021012021001 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 13.

Adding to 12021012021001 its reverse (10012021012021), we get a palindrome (22033033033022).

The spelling of 12021012021001 in words is "twelve trillion, twenty-one billion, twelve million, twenty-one thousand, one".