122220212000221 has 2 divisors, whose sum is σ = 122220212000222. Its totient is φ = 122220212000220.

The previous prime is 122220212000191. The next prime is 122220212000239. The reversal of 122220212000221 is 122000212022221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102360042574596 + 19860169425625 = 10117314^2 + 4456475^2 .

It is a cyclic number.

It is not a de Polignac number, because 122220212000221 - 2⁵ = 122220212000189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122220212000261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110106000110 + 61110106000111.

It is an arithmetic number, because the mean of its divisors is an integer number (61110106000111).

Almost surely, 2^{122220212000221} is an apocalyptic number.

It is an amenable number.

122220212000221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220212000221 is an equidigital number, since it uses as much as digits as its factorization.

122220212000221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122220212000221 its reverse (122000212022221), we get a palindrome (244220424022442).

The spelling of 122220212000221 in words is "one hundred twenty-two trillion, two hundred twenty billion, two hundred twelve million, two hundred twenty-one", and thus it is an aban number.