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2201200221 = 31167379901
BaseRepresentation
bin1000001100110011…
…1010011001011101
312200101221120001010
42003030322121131
514002001401341
61002231205433
7105355615233
oct20314723135
95611846033
102201200221
11a2a57a340
12515216879
13291061a4c
1416c4b0953
15cd3a7716
hex8333a65d

2201200221 has 16 divisors (see below), whose sum is σ = 3202544448. Its totient is φ = 1333728000.

The previous prime is 2201200181. The next prime is 2201200223. The reversal of 2201200221 is 1220021022.

2201200221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2201200221 - 213 = 2201192029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201200197 and 2201200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201200223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217371 + ... + 227271.

It is an arithmetic number, because the mean of its divisors is an integer number (200159028).

Almost surely, 22201200221 is an apocalyptic number.

It is an amenable number.

2201200221 is a deficient number, since it is larger than the sum of its proper divisors (1001344227).

2201200221 is a wasteful number, since it uses less digits than its factorization.

2201200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16652.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2201200221 is about 46916.9502525473. The cubic root of 2201200221 is about 1300.8279185761.

Adding to 2201200221 its reverse (1220021022), we get a palindrome (3421221243).

The spelling of 2201200221 in words is "two billion, two hundred one million, two hundred thousand, two hundred twenty-one".

Divisors: 1 3 11 33 6737 9901 20211 29703 74107 108911 222321 326733 66703037 200109111 733733407 2201200221