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BaseRepresentation
bin11010011000100…
…10111011110001
3120102110120200121
431030102323301
5423124431324
633543450241
75325151324
oct1514227361
9512416617
10221327089
11103a2a355
1262156981
1336b13799
14215747bb
151466d5e4
hexd312ef1

221327089 has 4 divisors (see below), whose sum is σ = 226036224. Its totient is φ = 216617956.

The previous prime is 221327087. The next prime is 221327173. The reversal of 221327089 is 980723122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221327089 - 21 = 221327087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221327083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2354497 + ... + 2354590.

It is an arithmetic number, because the mean of its divisors is an integer number (56509056).

Almost surely, 2221327089 is an apocalyptic number.

It is an amenable number.

221327089 is a deficient number, since it is larger than the sum of its proper divisors (4709135).

221327089 is an equidigital number, since it uses as much as digits as its factorization.

221327089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4709134.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 221327089 is about 14877.0658733502. The cubic root of 221327089 is about 604.8924873271.

The spelling of 221327089 in words is "two hundred twenty-one million, three hundred twenty-seven thousand, eighty-nine".

Divisors: 1 47 4709087 221327089