1224440101 has 4 divisors (see below), whose sum is σ = 1233787104. Its totient is φ = 1215093100.

The previous prime is 1224440081. The next prime is 1224440137. The reversal of 1224440101 is 1010444221.

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.

It is a cyclic number.

It is not a de Polignac number, because 1224440101 - 2¹¹ = 1224438053 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 (1224440141) 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, 4673305 + ... + 4673566.

It is an arithmetic number, because the mean of its divisors is an integer number (308446776).

Almost surely, 2^1224440101 is an apocalyptic number.

It is an amenable number.

1224440101 is a deficient number, since it is larger than the sum of its proper divisors (9347003).

1224440101 is an equidigital number, since it uses as much as digits as its factorization.

1224440101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9347002.

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

The square root of 1224440101 is about 34992.0005286923. Note that the first 3 decimals coincide. The cubic root of 1224440101 is about 1069.8244394178.

Adding to 1224440101 its reverse (1010444221), we get a palindrome (2234884322).

The spelling of 1224440101 in words is "one billion, two hundred twenty-four million, four hundred forty thousand, one hundred one".