221225054 has 8 divisors (see below), whose sum is σ = 332216040. Its totient is φ = 110486376.

The previous prime is 221225051. The next prime is 221225077. The reversal of 221225054 is 450522122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221225051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60869 + ... + 64400.

It is an arithmetic number, because the mean of its divisors is an integer number (41527005).

Almost surely, 2^221225054 is an apocalyptic number.

221225054 is a deficient number, since it is larger than the sum of its proper divisors (110990986).

221225054 is a wasteful number, since it uses less digits than its factorization.

221225054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126154.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 221225054 is about 14873.6362063888. The cubic root of 221225054 is about 604.7995183006.

Adding to 221225054 its reverse (450522122), we get a palindrome (671747176).

The spelling of 221225054 in words is "two hundred twenty-one million, two hundred twenty-five thousand, fifty-four".