120101210221 has 2 divisors, whose sum is σ = 120101210222. Its totient is φ = 120101210220.

The previous prime is 120101210209. The next prime is 120101210231. The reversal of 120101210221 is 122012101021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99218070121 + 20883140100 = 314989^2 + 144510^2 .

It is a cyclic number.

It is not a de Polignac number, because 120101210221 - 2¹³ = 120101202029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120101210231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60050605110 + 60050605111.

It is an arithmetic number, because the mean of its divisors is an integer number (60050605111).

Almost surely, 2^120101210221 is an apocalyptic number.

It is an amenable number.

120101210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120101210221 is an equidigital number, since it uses as much as digits as its factorization.

120101210221 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 120101210221 its reverse (122012101021), we get a palindrome (242113311242).

The spelling of 120101210221 in words is "one hundred twenty billion, one hundred one million, two hundred ten thousand, two hundred twenty-one".