221144362 has 8 divisors (see below), whose sum is σ = 332950500. Its totient is φ = 110160864.

The previous prime is 221144321. The next prime is 221144369. The reversal of 221144362 is 263441122.

It is a happy number.

221144362 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 173686041 + 47458321 = 13179^2 + 6889^2 .

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

It is not an unprimeable number, because it can be changed into a prime (221144369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204987 + ... + 206062.

Almost surely, 2^221144362 is an apocalyptic number.

221144362 is a deficient number, since it is larger than the sum of its proper divisors (111806138).

221144362 is a wasteful number, since it uses less digits than its factorization.

221144362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411320.

The product of its digits is 2304, while the sum is 25.

The square root of 221144362 is about 14870.9233741554. The cubic root of 221144362 is about 604.7259756696.

Adding to 221144362 its reverse (263441122), we get a palindrome (484585484).

The spelling of 221144362 in words is "two hundred twenty-one million, one hundred forty-four thousand, three hundred sixty-two".