221144150 has 24 divisors (see below), whose sum is σ = 411737040. Its totient is φ = 88369760.

The previous prime is 221144129. The next prime is 221144159. The reversal of 221144150 is 51441122.

It is a happy number.

221144150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221144159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76532 + ... + 79368.

It is an arithmetic number, because the mean of its divisors is an integer number (17155710).

Almost surely, 2^221144150 is an apocalyptic number.

221144150 is a deficient number, since it is larger than the sum of its proper divisors (190592890).

221144150 is a wasteful number, since it uses less digits than its factorization.

221144150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408 (or 4403 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 221144150 is about 14870.9162461497. The cubic root of 221144150 is about 604.7257824294.

Adding to 221144150 its reverse (51441122), we get a palindrome (272585272).

The spelling of 221144150 in words is "two hundred twenty-one million, one hundred forty-four thousand, one hundred fifty".