1222221241 has 4 divisors (see below), whose sum is σ = 1222435984. Its totient is φ = 1222006500.

The previous prime is 1222221233. The next prime is 1222221257. The reversal of 1222221241 is 1421222221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1421222221 = 89 ⋅15968789.

It is a cyclic number.

It is not a de Polignac number, because 1222221241 - 2³ = 1222221233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222221641) 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 in 3 ways as a sum of consecutive naturals, for example, 98595 + ... + 110296.

It is an arithmetic number, because the mean of its divisors is an integer number (305608996).

Almost surely, 2^1222221241 is an apocalyptic number.

It is an amenable number.

1222221241 is a deficient number, since it is larger than the sum of its proper divisors (214743).

1222221241 is an equidigital number, since it uses as much as digits as its factorization.

1222221241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214742.

The product of its digits is 256, while the sum is 19.

The square root of 1222221241 is about 34960.2809056220. The cubic root of 1222221241 is about 1069.1778238800.

Adding to 1222221241 its reverse (1421222221), we get a palindrome (2643443462).

The spelling of 1222221241 in words is "one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred forty-one".