221068354 has 16 divisors (see below), whose sum is σ = 364710528. Its totient is φ = 99860112.

The previous prime is 221068349. The next prime is 221068381. The reversal of 221068354 is 453860122.

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 7 ways as a sum of consecutive naturals, for example, 89232 + ... + 91675.

It is an arithmetic number, because the mean of its divisors is an integer number (22794408).

Almost surely, 2^221068354 is an apocalyptic number.

221068354 is a deficient number, since it is larger than the sum of its proper divisors (143642174).

221068354 is a wasteful number, since it uses less digits than its factorization.

221068354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180969.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 221068354 is about 14868.3675633877. The cubic root of 221068354 is about 604.6566856690.

The spelling of 221068354 in words is "two hundred twenty-one million, sixty-eight thousand, three hundred fifty-four".