221201230 has 16 divisors (see below), whose sum is σ = 419118480. Its totient is φ = 83823552.

The previous prime is 221201203. The next prime is 221201257. The reversal of 221201230 is 32102122.

It is an interprime number because it is at equal distance from previous prime (221201203) and next prime (221201257).

It is a self number, because there is not a number n which added to its sum of digits gives 221201230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581919 + ... + 582298.

It is an arithmetic number, because the mean of its divisors is an integer number (26194905).

Almost surely, 2^221201230 is an apocalyptic number.

221201230 is a deficient number, since it is larger than the sum of its proper divisors (197917250).

221201230 is a wasteful number, since it uses less digits than its factorization.

221201230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164243.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 221201230 is about 14872.8353046754. The cubic root of 221201230 is about 604.7778069849. Note that the first 3 decimals are identical.

Adding to 221201230 its reverse (32102122), we get a palindrome (253303352).

The spelling of 221201230 in words is "two hundred twenty-one million, two hundred one thousand, two hundred thirty".