2442113221 has 2 divisors, whose sum is σ = 2442113222. Its totient is φ = 2442113220.

The previous prime is 2442113213. The next prime is 2442113243. The reversal of 2442113221 is 1223112442.

It is an a-pointer prime, because the next prime (2442113243) can be obtained adding 2442113221 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1860628225 + 581484996 = 43135^2 + 24114^2 .

It is a cyclic number.

It is not a de Polignac number, because 2442113221 - 2³ = 2442113213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2442113192 and 2442113201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2442113521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1221056610 + 1221056611.

It is an arithmetic number, because the mean of its divisors is an integer number (1221056611).

Almost surely, 2^2442113221 is an apocalyptic number.

It is an amenable number.

2442113221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2442113221 is an equidigital number, since it uses as much as digits as its factorization.

2442113221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 22.

The square root of 2442113221 is about 49417.7419658163. The cubic root of 2442113221 is about 1346.6516418759.

Adding to 2442113221 its reverse (1223112442), we get a palindrome (3665225663).

The spelling of 2442113221 in words is "two billion, four hundred forty-two million, one hundred thirteen thousand, two hundred twenty-one".