4422242251521 has 12 divisors (see below), whose sum is σ = 6396795505620. Its totient is φ = 2943955845600.

The previous prime is 4422242251459. The next prime is 4422242251571. The reversal of 4422242251521 is 1251522422244.

4422242251521 is a `hidden beast` number, since 4 + 4 + 222 + 422 + 5 + 1 + 5 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4166044305921 + 256197945600 = 2041089^2 + 506160^2 .

It is not a de Polignac number, because 4422242251521 - 2¹⁸ = 4422241989377 is a prime.

It is a super-2 number, since 2×4422242251521² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4422242251571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350464626 + ... + 350477243.

It is an arithmetic number, because the mean of its divisors is an integer number (533066292135).

Almost surely, 2^{4422242251521} is an apocalyptic number.

It is an amenable number.

4422242251521 is a deficient number, since it is larger than the sum of its proper divisors (1974553254099).

4422242251521 is a wasteful number, since it uses less digits than its factorization.

4422242251521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700942576 (or 700942573 counting only the distinct ones).

The product of its digits is 102400, while the sum is 36.

Adding to 4422242251521 its reverse (1251522422244), we get a palindrome (5673764673765).

The spelling of 4422242251521 in words is "four trillion, four hundred twenty-two billion, two hundred forty-two million, two hundred fifty-one thousand, five hundred twenty-one".