221275834 has 8 divisors (see below), whose sum is σ = 357445620. Its totient is φ = 102127296.

The previous prime is 221275793. The next prime is 221275849. The reversal of 221275834 is 438572122.

It is a happy number.

221275834 is digitally balanced in base 2 and base 3, because in such bases 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 220611609 + 664225 = 14853^2 + 815^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 221275834.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4255279 + ... + 4255330.

Almost surely, 2^221275834 is an apocalyptic number.

221275834 is a deficient number, since it is larger than the sum of its proper divisors (136169786).

221275834 is a wasteful number, since it uses less digits than its factorization.

221275834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8510624.

The product of its digits is 26880, while the sum is 34.

The square root of 221275834 is about 14875.3431557057. The cubic root of 221275834 is about 604.8457899885.

The spelling of 221275834 in words is "two hundred twenty-one million, two hundred seventy-five thousand, eight hundred thirty-four".