2252440221 has 8 divisors (see below), whose sum is σ = 3022383264. Its totient is φ = 1492062000.

The previous prime is 2252440217. The next prime is 2252440243. The reversal of 2252440221 is 1220442522.

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

It is not a de Polignac number, because 2252440221 - 2² = 2252440217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2252440191 and 2252440200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2252440261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2390655 + ... + 2391596.

It is an arithmetic number, because the mean of its divisors is an integer number (377797908).

Almost surely, 2^2252440221 is an apocalyptic number.

It is an amenable number.

2252440221 is a deficient number, since it is larger than the sum of its proper divisors (769943043).

2252440221 is a wasteful number, since it uses less digits than its factorization.

2252440221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782411.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 2252440221 is about 47459.8801199497. The cubic root of 2252440221 is about 1310.8442435953.

Adding to 2252440221 its reverse (1220442522), we get a palindrome (3472882743).

The spelling of 2252440221 in words is "two billion, two hundred fifty-two million, four hundred forty thousand, two hundred twenty-one".