122600221 has 2 divisors, whose sum is σ = 122600222. Its totient is φ = 122600220.

The previous prime is 122600207. The next prime is 122600227. The reversal of 122600221 is 122006221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107931321 + 14668900 = 10389^2 + 3830^2 .

It is a cyclic number.

It is not a de Polignac number, because 122600221 - 2¹¹ = 122598173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122600195 and 122600204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122600227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61300110 + 61300111.

It is an arithmetic number, because the mean of its divisors is an integer number (61300111).

Almost surely, 2^122600221 is an apocalyptic number.

It is an amenable number.

122600221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122600221 is an equidigital number, since it uses as much as digits as its factorization.

122600221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 122600221 is about 11072.4984082184. The cubic root of 122600221 is about 496.7795972101.

Adding to 122600221 its reverse (122006221), we get a palindrome (244606442).

The spelling of 122600221 in words is "one hundred twenty-two million, six hundred thousand, two hundred twenty-one".