221422041 has 6 divisors (see below), whose sum is σ = 319831850. Its totient is φ = 147614688.

The previous prime is 221422037. The next prime is 221422051. The reversal of 221422041 is 140224122.

221422041 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., 134652816 + 86769225 = 11604^2 + 9315^2 .

It is not a de Polignac number, because 221422041 - 2² = 221422037 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221422001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12301216 + ... + 12301233.

Almost surely, 2^221422041 is an apocalyptic number.

It is an amenable number.

221422041 is a deficient number, since it is larger than the sum of its proper divisors (98409809).

221422041 is a wasteful number, since it uses less digits than its factorization.

221422041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24602455 (or 24602452 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 221422041 is about 14880.2567518172. The cubic root of 221422041 is about 604.9789770260.

Adding to 221422041 its reverse (140224122), we get a palindrome (361646163).

The spelling of 221422041 in words is "two hundred twenty-one million, four hundred twenty-two thousand, forty-one".