221074148 has 6 divisors (see below), whose sum is σ = 386879766. Its totient is φ = 110537072.

The previous prime is 221074141. The next prime is 221074151. The reversal of 221074148 is 841470122.

221074148 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 only one way, i.e., 206267044 + 14807104 = 14362^2 + 3848^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221074148.

It is not an unprimeable number, because it can be changed into a prime (221074141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27634265 + ... + 27634272.

It is an arithmetic number, because the mean of its divisors is an integer number (64479961).

Almost surely, 2^221074148 is an apocalyptic number.

It is an amenable number.

221074148 is a deficient number, since it is larger than the sum of its proper divisors (165805618).

221074148 is a wasteful number, since it uses less digits than its factorization.

221074148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55268541 (or 55268539 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 221074148 is about 14868.5624052899. The cubic root of 221074148 is about 604.6619681230.

The spelling of 221074148 in words is "two hundred twenty-one million, seventy-four thousand, one hundred forty-eight".