Search a number
-
+
2221120091 = 17191684053
BaseRepresentation
bin1000010001100011…
…1001101001011011
312201210102120222002
42010120321221123
514022101320331
61004222151215
7106020131531
oct20430715133
95653376862
102221120091
11a3a845443
1251ba2250b
13295217858
14170db8151
15ceede9cb
hex84639a5b

2221120091 has 8 divisors (see below), whose sum is σ = 2364090624. Its totient is φ = 2079518080.

The previous prime is 2221120087. The next prime is 2221120093. The reversal of 2221120091 is 1900211222.

It is a happy number.

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 2221120091 - 22 = 2221120087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221120093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338780 + ... + 345273.

It is an arithmetic number, because the mean of its divisors is an integer number (295511328).

Almost surely, 22221120091 is an apocalyptic number.

2221120091 is a deficient number, since it is larger than the sum of its proper divisors (142970533).

2221120091 is a wasteful number, since it uses less digits than its factorization.

2221120091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684261.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 2221120091 is about 47128.7607624049. The cubic root of 2221120091 is about 1304.7401098217.

The spelling of 2221120091 in words is "two billion, two hundred twenty-one million, one hundred twenty thousand, ninety-one".

Divisors: 1 17 191 3247 684053 11628901 130654123 2221120091