1222020601 has 2 divisors, whose sum is σ = 1222020602. Its totient is φ = 1222020600.

The previous prime is 1222020581. The next prime is 1222020643. The reversal of 1222020601 is 1060202221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1217940201 + 4080400 = 34899^2 + 2020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222020601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222020671) 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, 611010300 + 611010301.

It is an arithmetic number, because the mean of its divisors is an integer number (611010301).

Almost surely, 2^1222020601 is an apocalyptic number.

It is an amenable number.

1222020601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222020601 is an equidigital number, since it uses as much as digits as its factorization.

1222020601 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 1222020601 is about 34957.4112456858. The cubic root of 1222020601 is about 1069.1193152208.

Adding to 1222020601 its reverse (1060202221), we get a palindrome (2282222822).

The spelling of 1222020601 in words is "one billion, two hundred twenty-two million, twenty thousand, six hundred one".