221055355 has 8 divisors (see below), whose sum is σ = 265621392. Its totient is φ = 176607648.

The previous prime is 221055349. The next prime is 221055383. The reversal of 221055355 is 553550122.

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

It is a cyclic number.

It is not a de Polignac number, because 221055355 - 2³ = 221055347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25417 + ... + 32986.

It is an arithmetic number, because the mean of its divisors is an integer number (33202674).

Almost surely, 2^221055355 is an apocalyptic number.

221055355 is a deficient number, since it is larger than the sum of its proper divisors (44566037).

221055355 is an equidigital number, since it uses as much as digits as its factorization.

221055355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59165.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 221055355 is about 14867.9304208757. The cubic root of 221055355 is about 604.6448340008.

The spelling of 221055355 in words is "two hundred twenty-one million, fifty-five thousand, three hundred fifty-five".