623227221 has 12 divisors (see below), whose sum is σ = 902597280. Its totient is φ = 414386280.

The previous prime is 623227219. The next prime is 623227261. The reversal of 623227221 is 122722326.

It is not a de Polignac number, because 623227221 - 2¹ = 623227219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623227201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87945 + ... + 94766.

It is an arithmetic number, because the mean of its divisors is an integer number (75216440).

Almost surely, 2^623227221 is an apocalyptic number.

It is an amenable number.

623227221 is a deficient number, since it is larger than the sum of its proper divisors (279370059).

623227221 is a wasteful number, since it uses less digits than its factorization.

623227221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183096 (or 183093 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 623227221 is about 24964.5192423167. The cubic root of 623227221 is about 854.1788319737.

Adding to 623227221 its reverse (122722326), we get a palindrome (745949547).

The spelling of 623227221 in words is "six hundred twenty-three million, two hundred twenty-seven thousand, two hundred twenty-one".