22221413 has 8 divisors (see below), whose sum is σ = 22491000. Its totient is φ = 21953728.

The previous prime is 22221391. The next prime is 22221449. The reversal of 22221413 is 31412222.

It can be written as a sum of positive squares in 4 ways, for example, as 7491169 + 14730244 = 2737^2 + 3838^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22221413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22221391 and 22221400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43403 + ... + 43911.

It is an arithmetic number, because the mean of its divisors is an integer number (2811375).

Almost surely, 2^22221413 is an apocalyptic number.

It is an amenable number.

22221413 is a deficient number, since it is larger than the sum of its proper divisors (269587).

22221413 is a wasteful number, since it uses less digits than its factorization.

22221413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its digits is 192, while the sum is 17.

The square root of 22221413 is about 4713.9593761508. The cubic root of 22221413 is about 281.1408091035.

Adding to 22221413 its reverse (31412222), we get a palindrome (53633635).

The spelling of 22221413 in words is "twenty-two million, two hundred twenty-one thousand, four hundred thirteen".