1222243501 has 4 divisors (see below), whose sum is σ = 1226593404. Its totient is φ = 1217893600.

The previous prime is 1222243499. The next prime is 1222243511. The reversal of 1222243501 is 1053422221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 774286276 + 447957225 = 27826^2 + 21165^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222243501 - 2¹ = 1222243499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222243511) 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, 2174530 + ... + 2175091.

It is an arithmetic number, because the mean of its divisors is an integer number (306648351).

Almost surely, 2^1222243501 is an apocalyptic number.

It is an amenable number.

1222243501 is a deficient number, since it is larger than the sum of its proper divisors (4349903).

1222243501 is an equidigital number, since it uses as much as digits as its factorization.

1222243501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4349902.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1222243501 is about 34960.5992654588. The cubic root of 1222243501 is about 1069.1843147272.

Adding to 1222243501 its reverse (1053422221), we get a palindrome (2275665722).

The spelling of 1222243501 in words is "one billion, two hundred twenty-two million, two hundred forty-three thousand, five hundred one".