122022221 has 2 divisors, whose sum is σ = 122022222. Its totient is φ = 122022220.

The previous prime is 122022211. The next prime is 122022247. The reversal of 122022221 is 122220221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121308196 + 714025 = 11014^2 + 845^2 .

It is a cyclic number.

It is not a de Polignac number, because 122022221 - 2¹⁰ = 122021197 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 122022196 and 122022205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122022211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61011110 + 61011111.

It is an arithmetic number, because the mean of its divisors is an integer number (61011111).

Almost surely, 2^122022221 is an apocalyptic number.

It is an amenable number.

122022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122022221 is an equidigital number, since it uses as much as digits as its factorization.

122022221 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 14.

The square root of 122022221 is about 11046.3668687945. The cubic root of 122022221 is about 495.9976762920.

Adding to 122022221 its reverse (122220221), we get a palindrome (244242442).

The spelling of 122022221 in words is "one hundred twenty-two million, twenty-two thousand, two hundred twenty-one".