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22122109 = 59715281
BaseRepresentation
bin101010001100…
…0111001111101
31112121220211101
41110120321331
521130401414
62110053101
7356014642
oct124307175
945556741
1022122109
111153a739
1274aa191
134777309
142d1bdc9
151e1ea74
hex1518e7d

22122109 has 8 divisors (see below), whose sum is σ = 22818240. Its totient is φ = 21436800.

The previous prime is 22122103. The next prime is 22122169. The reversal of 22122109 is 90122122.

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 22122109 - 211 = 22120061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122103) 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, 1549 + ... + 6829.

It is an arithmetic number, because the mean of its divisors is an integer number (2852280).

Almost surely, 222122109 is an apocalyptic number.

It is an amenable number.

22122109 is a deficient number, since it is larger than the sum of its proper divisors (696131).

22122109 is an equidigital number, since it uses as much as digits as its factorization.

22122109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5411.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 22122109 is about 4703.4146106845. The cubic root of 22122109 is about 280.7213923587.

The spelling of 22122109 in words is "twenty-two million, one hundred twenty-two thousand, one hundred nine".

Divisors: 1 59 71 4189 5281 311579 374951 22122109