221122301 has 2 divisors, whose sum is σ = 221122302. Its totient is φ = 221122300.

The previous prime is 221122273. The next prime is 221122309. The reversal of 221122301 is 103221122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127012900 + 94109401 = 11270^2 + 9701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221122301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221122309) 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, 110561150 + 110561151.

It is an arithmetic number, because the mean of its divisors is an integer number (110561151).

Almost surely, 2^221122301 is an apocalyptic number.

It is an amenable number.

221122301 is a deficient number, since it is larger than the sum of its proper divisors (1).

221122301 is an equidigital number, since it uses as much as digits as its factorization.

221122301 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 221122301 is about 14870.1816061540. The cubic root of 221122301 is about 604.7058661760.

Adding to 221122301 its reverse (103221122), we get a palindrome (324343423).

The spelling of 221122301 in words is "two hundred twenty-one million, one hundred twenty-two thousand, three hundred one".