120021221021201 has 2 divisors, whose sum is σ = 120021221021202. Its totient is φ = 120021221021200.

The previous prime is 120021221021173. The next prime is 120021221021329. The reversal of 120021221021201 is 102120122120021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108885551910976 + 11135669110225 = 10434824^2 + 3337015^2 .

It is an emirp because it is prime and its reverse (102120122120021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120021221021201 - 2⁴² = 115623174510097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120021221021201.

It is not a weakly prime, because it can be changed into another prime (120021226021201) 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 as a sum of consecutive naturals, namely, 60010610510600 + 60010610510601.

It is an arithmetic number, because the mean of its divisors is an integer number (60010610510601).

Almost surely, 2^{120021221021201} is an apocalyptic number.

It is an amenable number.

120021221021201 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021221021201 is an equidigital number, since it uses as much as digits as its factorization.

120021221021201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120021221021201 its reverse (102120122120021), we get a palindrome (222141343141222).

The spelling of 120021221021201 in words is "one hundred twenty trillion, twenty-one billion, two hundred twenty-one million, twenty-one thousand, two hundred one".