1221022301 has 2 divisors, whose sum is σ = 1221022302. Its totient is φ = 1221022300.

The previous prime is 1221022279. The next prime is 1221022339. The reversal of 1221022301 is 1032201221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 905107225 + 315915076 = 30085^2 + 17774^2 .

It is an emirp because it is prime and its reverse (1032201221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1221022301 - 2¹⁴ = 1221005917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221022801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610511150 + 610511151.

It is an arithmetic number, because the mean of its divisors is an integer number (610511151).

Almost surely, 2^1221022301 is an apocalyptic number.

It is an amenable number.

1221022301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221022301 is an equidigital number, since it uses as much as digits as its factorization.

1221022301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1221022301 is about 34943.1295249867. The cubic root of 1221022301 is about 1068.8281055694.

Adding to 1221022301 its reverse (1032201221), we get a palindrome (2253223522).

The spelling of 1221022301 in words is "one billion, two hundred twenty-one million, twenty-two thousand, three hundred one".