120220221222221 has 2 divisors, whose sum is σ = 120220221222222. Its totient is φ = 120220221222220.

The previous prime is 120220221222209. The next prime is 120220221222259. The reversal of 120220221222221 is 122222122022021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114103201248100 + 6117019974121 = 10681910^2 + 2473261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120220221222221 is a prime.

It is a super-2 number, since 2×120220221222221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120220221222421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110110611110 + 60110110611111.

It is an arithmetic number, because the mean of its divisors is an integer number (60110110611111).

Almost surely, 2^{120220221222221} is an apocalyptic number.

It is an amenable number.

120220221222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120220221222221 is an equidigital number, since it uses as much as digits as its factorization.

120220221222221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 120220221222221 its reverse (122222122022021), we get a palindrome (242442343244242).

The spelling of 120220221222221 in words is "one hundred twenty trillion, two hundred twenty billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".