221200270 has 32 divisors (see below), whose sum is σ = 406980288. Its totient is φ = 86531328.

The previous prime is 221200253. The next prime is 221200271. The reversal of 221200270 is 72002122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257682 + ... + 258538.

It is an arithmetic number, because the mean of its divisors is an integer number (12718134).

Almost surely, 2^221200270 is an apocalyptic number.

221200270 is a deficient number, since it is larger than the sum of its proper divisors (185780018).

221200270 is a wasteful number, since it uses less digits than its factorization.

221200270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 221200270 is about 14872.8030310362. The cubic root of 221200270 is about 604.7769320839.

Adding to 221200270 its reverse (72002122), we get a palindrome (293202392).

The spelling of 221200270 in words is "two hundred twenty-one million, two hundred thousand, two hundred seventy".