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2122101211 = 17124829483
BaseRepresentation
bin111111001111100…
…1011000111011011
312110220002220121011
41332133023013123
513321224214321
6550323554351
7103405363666
oct17637130733
95426086534
102122101211
1199996405a
124b282b9b7
1327a8587b9
14161ba06dd
15c6480ae1
hex7e7cb1db

2122101211 has 4 divisors (see below), whose sum is σ = 2246930712. Its totient is φ = 1997271712.

The previous prime is 2122101209. The next prime is 2122101257. The reversal of 2122101211 is 1121012212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2122101211 - 21 = 2122101209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122101191 and 2122101200.

It is not an unprimeable number, because it can be changed into a prime (2122102211) 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, 62414725 + ... + 62414758.

It is an arithmetic number, because the mean of its divisors is an integer number (561732678).

Almost surely, 22122101211 is an apocalyptic number.

2122101211 is a deficient number, since it is larger than the sum of its proper divisors (124829501).

2122101211 is a wasteful number, since it uses less digits than its factorization.

2122101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124829500.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2122101211 is about 46066.2697751837. The cubic root of 2122101211 is about 1285.0559330072.

Adding to 2122101211 its reverse (1121012212), we get a palindrome (3243113423).

The spelling of 2122101211 in words is "two billion, one hundred twenty-two million, one hundred one thousand, two hundred eleven".

Divisors: 1 17 124829483 2122101211