450022221 has 24 divisors (see below), whose sum is σ = 709974720. Its totient is φ = 272414400.

The previous prime is 450022217. The next prime is 450022229. The reversal of 450022221 is 122220054.

It is not a de Polignac number, because 450022221 - 2² = 450022217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 450022194 and 450022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450022229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99865 + ... + 104273.

It is an arithmetic number, because the mean of its divisors is an integer number (29582280).

Almost surely, 2^450022221 is an apocalyptic number.

It is an amenable number.

450022221 is a deficient number, since it is larger than the sum of its proper divisors (259952499).

450022221 is a wasteful number, since it uses less digits than its factorization.

450022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457 (or 5454 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 450022221 is about 21213.7271831237. The cubic root of 450022221 is about 766.3220456392.

Adding to 450022221 its reverse (122220054), we get a palindrome (572242275).

The spelling of 450022221 in words is "four hundred fifty million, twenty-two thousand, two hundred twenty-one".