221130607 has 8 divisors (see below), whose sum is σ = 233107200. Its totient is φ = 209187864.

The previous prime is 221130601. The next prime is 221130631. The reversal of 221130607 is 706031122.

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

It is a cyclic number.

It is not a de Polignac number, because 221130607 - 2⁷ = 221130479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221130601) 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, 5568 + ... + 21754.

It is an arithmetic number, because the mean of its divisors is an integer number (29138400).

Almost surely, 2^221130607 is an apocalyptic number.

221130607 is a deficient number, since it is larger than the sum of its proper divisors (11976593).

221130607 is a wasteful number, since it uses less digits than its factorization.

221130607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16925.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 221130607 is about 14870.4608872758. The cubic root of 221130607 is about 604.7134375879.

Adding to 221130607 its reverse (706031122), we get a palindrome (927161729).

The spelling of 221130607 in words is "two hundred twenty-one million, one hundred thirty thousand, six hundred seven".