221244130 has 32 divisors (see below), whose sum is σ = 416772864. Its totient is φ = 84401856.

The previous prime is 221244097. The next prime is 221244173. The reversal of 221244130 is 31442122.

It is a junction number, because it is equal to n+sod(n) for n = 221244098 and 221244107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90099 + ... + 92521.

It is an arithmetic number, because the mean of its divisors is an integer number (13024152).

Almost surely, 2^221244130 is an apocalyptic number.

221244130 is a deficient number, since it is larger than the sum of its proper divisors (195528734).

221244130 is a wasteful number, since it uses less digits than its factorization.

221244130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 221244130 is about 14874.2774614433. The cubic root of 221244130 is about 604.8169015397.

Adding to 221244130 its reverse (31442122), we get a palindrome (252686252).

The spelling of 221244130 in words is "two hundred twenty-one million, two hundred forty-four thousand, one hundred thirty".