221095434 has 16 divisors (see below), whose sum is σ = 505361088. Its totient is φ = 63170112.

The previous prime is 221095417. The next prime is 221095439. The reversal of 221095434 is 434590122.

It is not an unprimeable number, because it can be changed into a prime (221095439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2632047 + ... + 2632130.

It is an arithmetic number, because the mean of its divisors is an integer number (31585068).

Almost surely, 2^221095434 is an apocalyptic number.

221095434 is an abundant number, since it is smaller than the sum of its proper divisors (284265654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221095434 is a wasteful number, since it uses less digits than its factorization.

221095434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5264189.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 221095434 is about 14869.2781936448. The cubic root of 221095434 is about 604.6813740127.

The spelling of 221095434 in words is "two hundred twenty-one million, ninety-five thousand, four hundred thirty-four".