120020211102221 has 2 divisors, whose sum is σ = 120020211102222. Its totient is φ = 120020211102220.

The previous prime is 120020211102199. The next prime is 120020211102251. The reversal of 120020211102221 is 122201112020021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70600913929225 + 49419297172996 = 8402435^2 + 7029886^2 .

It is a cyclic number.

It is not a de Polignac number, because 120020211102221 - 2¹⁸ = 120020210840077 is a prime.

It is a super-2 number, since 2×120020211102221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120020211102221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120020211102251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010105551110 + 60010105551111.

It is an arithmetic number, because the mean of its divisors is an integer number (60010105551111).

Almost surely, 2^{120020211102221} is an apocalyptic number.

It is an amenable number.

120020211102221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120020211102221 is an equidigital number, since it uses as much as digits as its factorization.

120020211102221 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 120020211102221 its reverse (122201112020021), we get a palindrome (242221323122242).

The spelling of 120020211102221 in words is "one hundred twenty trillion, twenty billion, two hundred eleven million, one hundred two thousand, two hundred twenty-one".