221153034 has 32 divisors (see below), whose sum is σ = 472982976. Its totient is φ = 68691200.

The previous prime is 221153029. The next prime is 221153041. The reversal of 221153034 is 430351122.

It is a self number, because there is not a number n which added to its sum of digits gives 221153034.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 432 + ... + 21035.

It is an arithmetic number, because the mean of its divisors is an integer number (14780718).

Almost surely, 2^221153034 is an apocalyptic number.

221153034 is an abundant number, since it is smaller than the sum of its proper divisors (251829942).

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

221153034 is a wasteful number, since it uses less digits than its factorization.

221153034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21590.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 221153034 is about 14871.2149470042. The cubic root of 221153034 is about 604.7338801821.

The spelling of 221153034 in words is "two hundred twenty-one million, one hundred fifty-three thousand, thirty-four".