2224620221 has 4 divisors (see below), whose sum is σ = 2355480252. Its totient is φ = 2093760192.

The previous prime is 2224620169. The next prime is 2224620253. The reversal of 2224620221 is 1220264222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 625500100 + 1599120121 = 25010^2 + 39989^2 .

It is a cyclic number.

It is not a de Polignac number, because 2224620221 - 2¹⁰ = 2224619197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2224620521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65429990 + ... + 65430023.

It is an arithmetic number, because the mean of its divisors is an integer number (588870063).

Almost surely, 2^2224620221 is an apocalyptic number.

It is an amenable number.

2224620221 is a deficient number, since it is larger than the sum of its proper divisors (130860031).

2224620221 is a wasteful number, since it uses less digits than its factorization.

2224620221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130860030.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2224620221 is about 47165.8798391380. The cubic root of 2224620221 is about 1305.4251040413.

Adding to 2224620221 its reverse (1220264222), we get a palindrome (3444884443).

The spelling of 2224620221 in words is "two billion, two hundred twenty-four million, six hundred twenty thousand, two hundred twenty-one".