2221244421 has 32 divisors (see below), whose sum is σ = 3395470848. Its totient is φ = 1279333440.

The previous prime is 2221244383. The next prime is 2221244437. The reversal of 2221244421 is 1244421222.

It is a happy number.

It is not a de Polignac number, because 2221244421 - 2⁹ = 2221243909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221244391 and 2221244400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221244461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31350 + ... + 73656.

It is an arithmetic number, because the mean of its divisors is an integer number (106108464).

Almost surely, 2^2221244421 is an apocalyptic number.

It is an amenable number.

2221244421 is a deficient number, since it is larger than the sum of its proper divisors (1174226427).

2221244421 is a wasteful number, since it uses less digits than its factorization.

2221244421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42401.

The product of its digits is 2048, while the sum is 24.

The square root of 2221244421 is about 47130.0797898752. The cubic root of 2221244421 is about 1304.7644541921.

Adding to 2221244421 its reverse (1244421222), we get a palindrome (3465665643).

It can be divided in two parts, 2221 and 244421, that added together give a palindrome (246642).

The spelling of 2221244421 in words is "two billion, two hundred twenty-one million, two hundred forty-four thousand, four hundred twenty-one".